2 LEARJET 60

SB 60-78-9
Recommended

Service Bulletin
If the instructions in this publication cannot be completed because of an STC change to the aircraft, speak to
the STC holder or the regional Federal Aviation Administration (FAA) office for information and disposition.

Contact Information Distribution Date

Business Aircraft June 25, 2018
Learjet Inc.
MS 53
P.O. Box 7707
Wichita, Kansas 67277-7707

Customer Response Center (CRC)

1-866-538-1247 (Toll Free)
1-514-855-2999 (Tel)
Push 5 then 2 for Parts Services or push 4
then 2 for Technical Publications.

EXHAUST - THRUST REVERSER SYSTEM IMPROVEMENT

1. Planning Information

A. Effectivity
(1) Learjet 60-002 thru 60-430.

NOTE: For aircraft effectivities 60-002 thru 60-276, Learjet Service Bulletin 60-78-7, "Installa-
tion of Thrust Reverser Interface Box" must be performed prior to or in conjunction
with this kit.

B. Reason
(1) The engine thrust reverser (T/R) system may be operated where one or both T/Rs are not
deployed when they are commanded to be deployed, or, one or both T/Rs may inadvertently stow
uncommanded after being deployed. In which case, the flight crew may not be aware of the
improper position of the T/R buckets as commanded.

These commodities, technology or software were exported from the United States in accordance
with the Export Administration Regulations. Diversion contrary to United States law is prohibited.

Refer to applicable government agency regulations and requirements and make sure that the work described
in this publication is performed in compliance with manufacturer’s recommendations and/or acceptable industry standards.
This document is proprietary to Bombardier Inc. and/or its affiliates and may not be reproduced or copied in any form or by
any means without the prior written consent of Bombardier Inc. and/or its affiliates.
© 2018, Bombardier Inc. All rights reserved.
Challenger*, Global Express*, Learjet*, are Trademarks of Bombardier Inc.

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 LEARJET 60
Service Bulletin

C. Description
(1) This service bulletin provides instructions to install a Thrust Reverser (T/R) Voice Command Warn-
ing System (VCWS) in the aircraft to alert operators of a thrust reverser malfunction.

D. Compliance
(1) Recommended - Bombardier Learjet Inc. recommends compliance with this modification at the
next 1200 hour inspection or 48 months. Whichever occurs first.

E. Approval
(1) The Federal Aviation Administration (FAA) has approved the technical content in this publication
that has an effect on the airplane type design.
(2) The European Aviation Safety Agency (EASA) has accepted the technical content in this publica-
tion that has an effect on the airplane type design.
(3) Transport Canada Civil Aviation (TCCA) has accepted the technical content in this publication that
has an effect on the airplane type design.

F. Labor Hours - Estimated Accomplishment Time

-807 -806 -802 -801

TASK
KIT KIT KIT KIT

4.0 4.0 4.0 4.0 Labor hours to gain access.

12.0 12.0 12.0 12.0 Labor hours to do the aircraft modification.

3.0 3.0 3.0 3.0 Labor hours to do a functional test/operational check.

1.0 1.0 1.0 1.0 Labor hours to return the aircraft to airworthy status.

20.0 20.0 20.0 20.0 Total Labor Hours

NOTE: The labor hours provided are estimates to assist scheduling and planning the tasks given
in this bulletin. The estimates are for direct labor performed by an experienced crew and
do not include the time for familiarization, planning, aircraft preparation in hangar, such as
towing and positioning of scaffolds, removal of aircraft loose equipment, acquisition of
tools and equipment, training, supervision and inspection.

If labor coverage is provided, only the hours above will be paid.

When planning to complete these instructions, please contact Bombardier Aerospace,

Learjet Inc. Business Aircraft Customer Service, Parts Services for parts availability and
shipping times as necessary. (Refer to the title page of this document for contact
information.)

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 LEARJET 60
Service Bulletin

G. Expense Coverage
(1) Labor Coverage
(a) Aircraft in the Learjet manufactured warranty period / vendor warranty period, labor coverage
is provided.

NOTE: For labor coverage to apply, these instructions must be completed at a

Bombardier Business Aviation Service Facility or at a Bombardier Learjet
Authorized Service Facility. These instructions must be completed within 24
months from the Basic Issue distribution date of this publication.

(b) Aircraft out of the Learjet manufactured warranty period / vendor warranty period, no labor
coverage is provided.

(2) Material Coverage

(a) Aircraft in the Learjet manufactured warranty period / vendor warranty period, material cover-
age is provided.

NOTE: For material coverage to apply, an order must be placed for these kits/parts from
Bombardier Learjet within 12 months from the Basic Issue distribution date of this
publication.

(b) Aircraft out of the Learjet manufactured warranty period / vendor warranty period, no material
coverage is provided.

(3) Smart Parts Plus Coverage

(a) On aircraft in the new aircraft warranty period at the time of service bulletin distribution, Smart
Parts Plus does not pay for the kit necessary to do this service bulletin at any time.
(b) On aircraft out of the new aircraft warranty period at the time of service bulletin distribution,
Smart Parts Plus pays for the kit necessary to do this service bulletin for up to 48 months from
the Basic Issue distribution date of this service bulletin.

H. Material Required

PART NUMBER QTY NOMENCLATURE * PRICING

6078330001-801 1 Service Bulletin Kit $28,273.71

6078330001-802 1 Service Bulletin Kit $28,271.04

6078330001-806 1 Service Bulletin Kit $28,273.71

6078330001-807 1 Service Bulletin Kit $28,271.04

NOTE: The above prices can change.

Refer to Paragraph 2.A. to determine which kit is necessary.

* For current prices, availability, ordering and shipping information, please call Bombardier
Aerospace, Learjet Inc. Business Aircraft Customer Service, Parts Services. (Refer to the
title page of this document for contact information.)

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 LEARJET 60
Service Bulletin

(1) Other materials/parts necessary to complete these instructions.

PART
NOMENCLATURE QTY MANUFACTURER
NUMBER

As
(* See Note) Alodine Obtain Locally
Required

EY 3009 HB Fuller
1
or
Epoxy Insert
Hysol EA9321 Loctite Aerospace (Dexter Aerospace
Potting Compound
or Adhesive Div.)
ATR-500 A/B Advanced Technology & Research Inc.

NOTE: * Refer to Learjet Maintenance Manual, Chapter 20.

For current prices, availability, ordering and shipping information, please call
Bombardier Aerospace, Learjet Inc. Business Aircraft Customer Service, Parts
Services. (Refer to the title page of this document for contact information.)

I. Tools, Equipment and Materials

(1) Refer to Chapter 51 of the Structural Repair Manual, "Honeycomb Insert Repair".

J. Weight and Balance

(1) Change in basic weight and moment.

KIT
CHANGE IN BASIC WEIGHT CHANGE IN BASIC MOMENT
NUMBER

-801 Plus (+) 2.57 pounds Plus (+) 320 inch-pounds

-802 Plus (+) 2.57 pounds Plus (+) 320 inch-pounds

-806 Plus (+) 2.32 pounds Plus (+) 289 inch-pounds

-807 Plus (+) 2.32 pounds Plus (+) 289 inch-pounds

K. References

NOTE: If applicable, referenced third party documentation can be accessed from the Customer
Portal under this service bulletin number.

(1) Service Bulletin Compliance Response Form.

(2) Service Bulletin Evaluation Sheet.
(3) Learjet Maintenance Manual, Chapters 20, 24, 29 and 53.
(4) Learjet Structural Repair Manual, Chapter 51.
(5) Learjet Wiring Manual, Chapter 20.
(6) Learjet Model 60/60XR Thrust Reverser VCWS Troubleshooting Guide.

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 LEARJET 60
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L. Other Publications Affected

(1) Learjet Illustrated Parts Catalog, Chapter 78.

2. Material Information

A. Parts Required
(1) The 6078330001-801 kit applies to aircraft serial effectivity 60-001 thru 60-072, 60-074 thru 60-
293, 60-295 thru 60-306 and 60-308 thru 60-318 without the T/R voice warning unit provisioning kit
installed and contains the parts that follow:

IDENTIFICATION
PART NUMBER QTY NOMENCLATURE ALTERNATE
CODE

6078330003-801 1 Relay Box - T/R VCWS E6078330003

MS35650-302 1 Nut GS78-01

MS21042-3 1 Locknut GS78-01

MS35338-43 2 Lockwasher GS78-01

AN960JD10L 4 Washer GS78-01

MS35207-265 1 Screw GS78-01

M15570-22-1 1 Insertion/Extraction Tool RP501, RP502

*** M81969/14-10 1 Insertion/Extraction Tool P60783300011

M81969/1-02 1 Insertion/Extraction Tool P60783300012

8809032 20 Ft Flex Sleeving (0.25 in)

M83519/2-8 8 Solder Shield Termination

MS25083-2BB13 1 Bonding Jumper

TJS322701 2 Dual Wire Splice SP5, SP6

D436-37 16 Splice SP1-SP4, SP7-SP18

MS27039-1-04 8 Screw - Pan Head 630A-020

NAS1149F0332P 8 Washer - Flat 630A-020

630A-020
NAS1836C3-11 8 Insert
E6078330003

MS3367-1-9 30 Tie Wrap (6 inch)

M39029/1-100 2 Contact - Pin TJ118/TJ121

36151 2 Ring Terminal (#6-22AWG) P60783300012 31882

320552 3 Ring Terminal (#10-22AWG) GS156/GS78-01 31884

030-2259-000 3 Contact - Pin RP1232(MP)

2803-4-0000 10 Contact - Socket RJ501, RJ502

2841-5-9000 10 Contact - Pin RP501, RP502

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 LEARJET 60
Service Bulletin

IDENTIFICATION
PART NUMBER QTY NOMENCLATURE ALTERNATE
CODE

Kit - Screw Lock Female

* 7253 2
(0.375)

Gender Changer
DGB37M 1
(DB37 Male/Male)

5-1478762-4 1 Backshell P60783300012B

Connector - Plug
1757820-9 1 P60783300012
(with contacts)

206036-3 1 Connector - Receptacle J60783300013

** 66103-4 16 Contact - Pin J60783300013

J60783300013
206070-8 2 Cable Clamp
P60783300013

P60783300013
** 66105-4 24 Contact - Socket
P60783300014

206037-1 1 Connector - Plug P60783300013

2-1478762-5 6 Backshell P60783300011B

Connector - Plug
1757820-8 1 P60783300011
(with contacts)

630A-020 1 Audio Storage Playback Unit E6078330001

6078330001-805 1 Wire Kit

206060-1 1 Connector P60783300014

1-206062-6 1 Backshell P60783300014B

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

* Replace the existing screw locks (2ea) on the Gender Changer P/N DGB37M with
Female Screw Lock kit P/N 7253.

** Use extraction tool P/N 305183 (not included in kit) to remove/install contacts in connec-
tors P60783300013/J60783300013 and P60783300014.

*** Use insertion/extraction tool P/N M81969/14-10 to install contacts in P60783300011.

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 LEARJET 60
Service Bulletin

(2) The 6078330001-802 kit applies to aircraft serial effectivity 60-294, 60-307, 60-319 thru 60-424
and 60-426 thru 60-430 without the T/R voice warning unit provisioning kit installed and contains
the parts that follow:

IDENTIFICATION
PART NUMBER QTY NOMENCLATURE ALTERNATE
CODE

6078330003-801 1 Relay Box - T/R VCWS E6078330003

MS35650-302 1 Nut GS78-01

MS21042-3 1 Locknut GS78-01

MS35338-43 2 Lockwasher GS78-01

AN960JD10L 4 Washer GS78-01

MS35207-265 1 Screw GS78-01

M15570-22-1 1 Insertion/Extraction Tool RP501, RP502

*** M81969/14-10 1 Insertion/Extraction Tool P60783300011

M81969/1-02 1 Insertion/Extraction Tool P60783300012

M81969/14-02 1 Insertion/Extraction Tool TJ118, TJ121

8809032 20 Ft Flex Sleeving (0.25 in)

M83519/2-8 8 Solder Shield Termination

MS25083-2BB13 1 Bonding Jumper

TJS322701 2 Dual Wire Splice SP5, SP6

SP1-SP4, SP7, SP8,

D436-37 14 Splice
SP11-SP18

MS27039-1-04 8 Screw - Pan Head 630A-020

NAS1149F0332P 8 Washer - Flat 630A-020

NAS1836C3-11 8 Insert 630A-020

MS3367-1-9 30 Tie Wrap (6 inch)

M39029/1-100 2 Contact - Pin TJ118/TJ121 31882

36151 2 Ring Terminal (#6-22AWG) P60783300012 31884

320552 3 Ring Terminal (#10-22AWG) GS156

030-2259-000 3 Contact - Pin RP1232 (MP)

2803-4-0000 10 Contact - Socket RJ501, RJ502

2841-5-9000 10 Contact - Pin RP501, RP502

Kit - Screw Lock Female

* 7253 2
(0.375)

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 LEARJET 60
Service Bulletin

IDENTIFICATION
PART NUMBER QTY NOMENCLATURE ALTERNATE
CODE

Gender Changer
DGB37M 1
(DB37 Male/Male)

5-1478762-4 1 Backshell P60783300012B

Connector - Plug (with con-

1757820-9 1 P60783300012
tacts)

206036-3 1 Connector - Receptacle J60783300013

** 66103-4 16 Contact - Pin J60783300013

J60783300013
206070-8 2 Cable Clamp
P60783300013

P60783300013
** 66105-4 24 Contact - Socket
P60783300014

206037-1 1 Connector - Plug P60783300013

2-1478762-5 6 Backshell P60783300011B

Connector - Plug (with con-

1757820-8 1 P60783300011
tacts)

Audio Storage Playback

630A-020 1 E6078330001
Unit

6078330001-808 1 Wire Kit

206060-1 1 Connector P60783300014

1-206062-6 1 Backshell P60783300014B

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

* Replace the existing screw locks (2ea) on the Gender Changer P/N DGB37M with
Female Screw Lock kit P/N 7253.

** Use extraction tool P/N 305183 (not included in kit) to remove/install contacts in connec-
tors P60783300013/J60783300013 and P60783300014.

*** Use insertion/extraction tool P/N M81969/14-10 to install contacts in P60783300011.

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 LEARJET 60
Service Bulletin

(3) The 6078330001-806 kit applies to aircraft 60-073 with the T/R voice warning unit provisioning kit
6078330002-801 installed and contains the parts that follow:

PART NUMBER QTY NOMENCLATURE IDENTIFICATION CODE

6078330003-801 1 Relay Box - T/R VCWS E6078330003

MS35650-302 1 Nut GS78-01

MS21042-3 1 Locknut GS78-01

MS35338-43 2 Lockwasher GS78-01

AN960JD10L 2 Washer GS78-01

MS35207-265 1 Screw GS78-01

M15570-22-1 1 Insertion/Extraction Tool RP501, RP502

* M81969/14-10 1 Insertion/Extraction Tool P60783300011

M81969/1-02 1 Insertion/Extraction Tool P60783300012

8809032 20 Ft Flex Sleeving (0.25 in)

M83519/2-8 8 Solder Shield Termination

MS25083-2BB13 1 Bonding Jumper

MS27039-1-04 8 Screw - Pan Head 630A-020

NAS1149F0332P 8 Washer - Flat 630A-020

630A-020 1 Audio Storage Playback Unit E6078330001

206060-1 1 Connector P60783300014

1-206062-6 1 Backshell P60783300014B

** 66105-4 4 Contact - Socket P60783300014

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

* Use insertion/extraction tool P/N M81969/14-10 to install contacts in P60783300011.

** Use insertion/extraction tool P/N 305183 (not included in kit) to install contacts in con-
nector P60783300014.

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 LEARJET 60
Service Bulletin

(4) The 6078330001-807 kit applies to aircraft 60-425 with the T/R voice warning unit provisioning kit
6078330002-802 installed and contains the parts that follow:

PART NUMBER QTY NOMENCLATURE IDENTIFICATION CODE

6078330003-801 1 Relay Box - T/R VCWS E6078330003

MS35650-302 1 Nut GS78-01

MS21042-3 1 Locknut GS78-01

MS35338-43 2 Lockwasher GS78-01

AN960JD10L 4 Washer GS78-01

MS35207-265 1 Screw GS78-01

M15570-22-1 1 Insertion/Extraction Tool RP501, RP502

* M81969/14-10 1 Insertion/Extraction Tool P60783300011

M81969/1-02 1 Insertion/Extraction Tool P60783300012

M81969/14-02 1 Insertion/Extraction Tool TJ118, TJ121

8809032 20 Ft Flex Sleeving (0.25 in)

M83519/2-8 8 Solder Shield Termination

MS25083-2BB13 1 Bonding Jumper

MS27039-1-04 8 Screw - Pan Head 630A-020

NAS1149F0332P 8 Washer - Flat 630A-020

630A-020 1 Audio Storage Playback Unit E6078330001

206060-1 1 Connector P60783300014

1-206062-6 1 Backshell P60783300014B

** 66105-4 4 Contact - Socket P60783300014

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

* Use insertion/extraction tool P/N M81969/14-10 to install contacts in P60783300011.

** Use insertion/extraction tool P/N 305183 (not included in kit) to install contacts in con-
nector P60783300014.

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Service Bulletin

(a) The 6078330001-805 wire kit is a component of the 6078330001-801 kit and contains the
parts that follow:

PART NUMBER NOMENCLATURE OR

QTY
OR WIRE CODE WIRE SPECIFICATION

M27500-24SN2T23 6 Ft Wire Twisted Shielded Pair 24 GA

B0801150-22-9 289 Ft Wire 22 GA

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

(5) Wire Code table for 6078330001-805 Wire Kit applies to aircraft serial effectivity 60-001 thru 60-
293, 60-295 thru 60-306 and 60-308 thru 60-318.

NOTE: The 6078330001-805 Wire kit contains specific lengths of wire with coded labels as
follows.

WIRE SPECIFICATION WIRE CODE LENGTH

607833000101A22 2 Feet

607833000102A22 2 Feet

607833000102B22 2 Feet

607833000103A22 2 Feet

607833000103B22 15 Feet

607833000103C22 15 Feet

607833000105A22 15 Feet

607833000105B22 2 Feet

B0801150-22-9 607833000106A22 15 Feet

607833000106B22 2 Feet

607833000107A22 30 Feet

607833000107B22 5 Feet

607833000109A22 2 Feet

607833000110A22 2 Feet

607833000110B22 2 Feet

607833000121A22N 5 Feet

607833000123A22N 5 Feet

607833000125A22 2 Feet

607833000126A22 2 Feet
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Service Bulletin

WIRE SPECIFICATION WIRE CODE LENGTH

607833000126B22 2 Feet

607833000127A22 2 Feet

607833000127B22 2 Feet

607833000128A22 2 Feet

607833000128B22 2 Feet

607833000129A22 2 Feet

607833000129B22 2 Feet

B0801150-22-9 607833000130A22 2 Feet

607833000130B22 2 Feet

607833000131A22 2 Feet

607833000131B22 2 Feet

607833000132A22 2 Feet

607833000132B22 2 Feet

607833000133A22 2 Feet

607833000133B22 2 Feet

M27500-24SN2T23 607833000104A24 6 Feet

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

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Service Bulletin

(6) Wire Code table for 6078330001-808 Wire Kit applies to aircraft serial effectivity 60-294, 60-307
and 60-319 thru 60-430.

NOTE: The 6078330001-808 Wire kit contains specific lengths of wire with coded labels as
follows:

WIRE SPECIFICATION WIRE CODE LENGTH

607833000111A22 2 Feet

607833000112A22 2 Feet

607833000112B22 2 Feet

607833000113A22 2 Feet

607833000113B22 15 Feet

607833000113C22 15 Feet

607833000115A22 15 Feet

607833000115B22 5 Feet

607833000115C22 2 Feet

607833000116A22 15 Feet

607833000116B22 5 Feet

607833000116C22 2 Feet

B0801150-22-9 607833000117A22 15 Feet

607833000117B22 5 Feet

607833000119A22 2 Feet

607833000120A22 2 Feet

607833000120B22 2 Feet

607833000122A22N 5 Feet

607833000124A22N 5 Feet

607833000134A22 2 Feet

607833000135A22 2 Feet

607833000135B22 2 Feet

607833000136A22 2 Feet

607833000136B22 2 Feet

607833000137A22 2 Feet

607833000137B22 2 Feet

607833000138A22 2 Feet
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Service Bulletin

WIRE SPECIFICATION WIRE CODE LENGTH

607833000138B22 2 Feet

607833000139A22 2 Feet

607833000139B22 2 Feet

B0801150-22-9 607833000140A22 2 Feet

607833000140B22 2 Feet

607833000141A22 2 Feet

607833000141B22 2 Feet

607833000142A22 2 Feet

607833000142B22 2 Feet

M27500-24SN2T23 607833000114A24 6 Feet

NOTE: Some hardware comes in pre-packaged quantities. When that occurs, the quantity in the
kit will be more than the quantity in the parts list.

3. Accomplishment Instructions

A. Gain Access
(1) Set the battery switches to OFF. If necessary, disconnect external electrical power and the aircraft
batteries. (Refer to Chapter 24 of the Maintenance Manual.)
(2) Access will be required to route the wire from the aft pedestal to the bulkhead receptacle RJ501,
pilot circuit breaker panel and copilot circuit breaker panel.
(3) Access will also be required to route wire from the bulkhead connector RP501 to EGPWS AE438
connector RP1232 (MP), in the nose compartment, or EGPWS AE438 connector RP1232 (MP), in
the baggage compartment as installed, and terminal junction blocks TJ118 & TJ121.

B. Modification of Aircraft

NOTE: For dimensions defined without specific tolerance information, refer to Paragraph 3.G. for
standard tolerances.

On aircraft that install the -801 & -802 kits, begin with Step 1.
On aircraft that install the -806 & -807 kits, proceed to Step 8.

(1) Remove the aft pedestal. (Refer to Chapter 53 of the Maintenance Manual.)
(2) Remove the Forward Mid Access Panel (220AC) under the aft pedestal location. (Refer to Chapter
53 of the Maintenance Manual.)
(3) Install inserts for mounting the Audio Storage Playback Unit and Relay Box-T/R VCWS. (See Fig-
ure 1, Detail F.) (Refer to Chapter 51 of the Structural Repair Manual.) Mark the floor plate "Modi-
fied per SB60-78-9" near the inserts.
(4) Install new wiring. (See Figure 2, for aircraft 60-001 thru 60-293, 60-295 thru 60-306, and 60-308
thru 60-318.) (See Figure 3, for aircraft 60-294, 60-307 and 60-319 thru 60-430.)
(a) Route wiring. (See Figure 1, Sheets 1 thru 7 and Sheet 9.) (Refer to Chapter 20 of the Wiring
Manual, Standard Practices.)

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(5) Replace existing screw locks on gender changer with Female Screw Lock kit P/N 7253.

NOTE: This replaces the existing aluminum screw locks with new steel screw locks.

(6) Install the Gender Changer DGB37M on Audio Storage Playback Unit connector J2.
(7) Install the Forward Mid Access Panel (220AC) under the aft pedestal. (Refer to Chapter 53 of the
Maintenance Manual.)

NOTE: On aircraft that install the -801 & -802 kits, proceed to Step 14.

(8) Install connector P60783300014 to aircraft wiring as follows:

(a) Depin wires 607833000113A22, 607833000113B22, 607833000113C22 and
607833000124A22N from connector P60783300011.
(b) Remove existing contacts from wires and install sockets 66105-4.
(c) Install wires 607833000113A22, 607833000113B22, 607833000113C22
607833000124A22N into P60783300014. (See Figure 2 for aircraft 60-001 thru 60-293, 60-
295 thru 60-306 and 60-308 thru 60-318), (See Figure 3 for aircraft 60-294, 60-307 and 60-
319 thru 60-430).
(9) Remove the Jumper Receptacle J60783300011. Destroy jumper receptacle 6078330002-806.
(10) Uncap, un-stow and remove the Gender Changer attached to the Audio Storage Playback Unit
connector P60783300012.
(11) Connect the Gender Changer connector to the Audio Storage Playback Unit J2. (See Figure 1,
Detail F.)
(12) Install the Audio Storage Playback Unit and the Relay Box-T/R VCWS on the Forward Mid Access
Panel (220AC).
(13) Connect the bonding jumper from GS78-01 to the Audio Storage Playback Unit mounting screw.
(14) Connect P60783300011 and P60783300014 to Relay Box-T/R VCWS.
(15) Connect P60783300012 to Gender Changer.
(16) Connect P60783300013 to J60783300013.
(17) Return aircraft to normal configuration.
(18) Restore electrical power. (Refer to Chapter 24 of the Maintenance Manual.)

C. Functional Test/Operational Check

(1) Perform the T/R Voice Warning Unit Functional Test as follows:
(a) Preparation:
1) Make sure aircraft is in a Weight On Wheel (WOW) configuration.
2) Verify the following circuit breakers are in:
a) CB93 “L T/R Auto Stow”.
b) CB94 “R T/R Auto Stow”.
3) Verify external power unit is connected to aircraft and is turned on. (Refer to Chapter 24 of
the Maintenance Manual.)
4) Verify “BATTERY 1” & “BATTERY 2” switches are set on (UP position).
5) Do not apply hydraulic power to the aircraft.
(b) Testing (without Hydraulic Pressure)
1) Set L throttle lever to Idle.
2) Set L T/R lever to Deploy position, make sure that the following occurs:
a) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning after 4 sec-
onds.
b) VCWS audio is synchronized between L and R speakers.
c) VCWS “STOW THRUST REVERSERS” aural is heard in both cockpit headsets.
3) Stow L T/R lever.
a) VCWS silences.

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 LEARJET 60
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4) Set R throttle lever to Idle.

5) Set R T/R lever to Deploy position, make sure that the following occurs:
a) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning after 4 sec-
onds.
b) VCWS audio is synchronized between L and R speakers and is heard in both cockpit
headsets.
6) Stow R T/R lever.
a) VCWS silences.
7) Set LR T/R lever to Deploy position, make sure that the following occurs:
a) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning after 4 sec-
onds.
b) VCWS audio is synchronized between L and R speakers and is heard in both cockpit
headsets.
8) Stow L T/R lever.
a) VCWS continues to sound.
9) Stow R T/R lever.
a) VCWS silences.
10) L T/R lever to Deploy position, make sure that the following occurs:
a) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning after 4 sec-
onds.
b) VCWS audio is synchronized between L and R speakers and is heard in both cockpit
headsets.
11) Pull the L TR AUTO STOW CB (CB93).
a) VCWS continues to sound.
12) Pull the R TR AUTO STOW CB (CB94).
a) VCWS silences.
13) Push in L and R TR AUTO STOW CBs (CB93, CB94).
a) VCWS does not sound after 4 seconds.
14) Set L T/R lever to Stow position, make sure that the following occurs:
a) No result.
15) Set R T/R lever to Deploy position, make sure that the following occurs:
a) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning after 4 sec-
onds.
b) VCWS audio is synchronized between L and R speakers and is heard in both cockpit
headsets.
16) Pull the R TR AUTO STOW CB (CB94).
a) VCWS continues to sound.
17) Pull the L TR AUTO STOW CB (CB93).
a) VCWS silences.
18) Push in L and R TR AUTO STOW CBs (CB93, CB94).
a) VCWS does not sound after 4 seconds.
19) Set R T/R lever to Stow position.
a) No result.
(c) Testing (with Hydraulic Pressure)

WARNING: MAKE SURE THAT ALL PERSONNEL AND EQUIPMENT ARE CLEAR OF
THRUST REVERSERS BEFORE OPERATION.

1) Apply hydraulic pressure to the aircraft. (Refer to Chapter 29 of the Maintenance Manual.)
a) No result.
2) L T/R lever to Deploy position.
a) L T/R deploys.

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 LEARJET 60
Service Bulletin

3) Pause 4 seconds, pull L TR CONT CB (CB37).

a) L T/R stows.
b) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning.
c) VCWS audio is synchronized between L and R speakers and is heard in both cockpit
headsets.
4) Stow L T/R lever.
a) VCWS silences.
5) R T/R lever to Deploy position.
a) R T/R deploys.
6) Pause 4 seconds, pull R TR CONT CB (CB36).
a) R T/R stows.
b) VCWS sounds repeating “STOW THRUST REVERSERS” aural warning.
c) VCWS audio is synchronized between L and R speakers and is heard in both cockpit
headsets.
7) Stow R T/R lever.
a) VCWS silences.
8) Set L and R throttle levers to CUTOFF.
(d) Power Down
1) Remove hydraulic power from the aircraft and disconnect the cart if no longer required.
(Refer to Chapter 29 of the Maintenance Manual.)
2) Remove electrical power from aircraft and disconnect ground power unit if no longer
required. (Refer to Chapter 24 of the Maintenance Manual.)
(e) Return aircraft to Weight On Wheel (WOW) configuration.

D. Return Aircraft to Airworthy Status

(1) Make sure the batteries are connected to the aircraft. (Refer to Chapter 24 of the Maintenance
Manual.)
(2) Install any additional items removed for access.

E. Compliance Response Form

(1) Complete the compliance response form.
(2) Send the compliance response form to Learjet Inc. as soon as possible.

F. Aircraft Maintenance Records

(1) Complete the Aircraft Maintenance Records in accordance with the regulatory requirements of the
appropriate aircraft certification authority.

G. General Information
(1) The table below lists standard tolerances which shall apply to dimensions defined within the
instructions or illustrations of this document that do not have specified tolerances.

UNLESS OTHERWISE SPECIFIED

ALL TOLERANCES ARE AS FOLLOWS:

DECIMALS ANGLES

0.0 ± 0.1 in [0.0 mm ± 2.54 mm] MACHINED FORMED

0.00 ± 0.03 in [0.00 mm ± 0.76 mm]
± 0°30’ ± 2°
0.000 ± 0.010 in [0.000 mm ± 0.254 mm]

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 LEARJET 60
Service Bulletin

C B

C B E
A
D
F
A E D

PRIMARY VIEW AND DETAIL LOCATOR

SCREW
MS35207-265
WASHER
LOCKWASHER AN960JD10L
MS35338-43 (2 REQUIRED)
FRAME STATION NUT
WASHER MS35650-302
AN960JD10L BONDING JUMPER
(2 REQUIRED) MS25083-2BB13
LOCKNUT LOCKWASHER
MS21042-3 MS35338-43

TYPICAL GROUND STUD BUILD-UP

(USE FOR REFERENCE ONLY)

K60-607809-001-01

Thrust Reverser System Improvement

Figure 1 (Sheet 1 of 10)

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 LEARJET 60
Service Bulletin

ROUTE WIRES COVERED IN FLEX

SLEEVING AS NEEDED FROM T/R
VOICE WARNING WIRE HARNESS
OVER TO EXISTING WIRE HARNESS
(LOCATED ON PILOT SIDE OF
PEDESTAL) ROUTED FORWARD, UP
TO AVIONICS HARNESS ROUTING.

AUDIO STORAGE ROUTING OF GROUND WIRES

PLAYBACK UNIT AND BONDING JUMBER
(REF) P/N MS25083-2BB13
TO GP201A AND GS78-01
AURAL
WARN
MIXER
(1 REQUIRED) GROUND STUD GS78-01
(INSTALL PER WIRE
DIAGRAM CHAPTER 20)

T/R VCWS
RELAY BOX
(REF)

CONNECTOR PLUG
206060-1
CABLE CLAMP
1-206062-6 (P60783300014)
FLEX WEAVE SLEEVING 0.250
8809032
(RELAY BOX T/R VCWS J2 PICK UP AVIONICS WIRE HARNESS
RECEPTACLE CONNECTOR) ROUTING BUNDLE (ON PILOT SIDE
GOING UP TO PRESSURE BULKHEAD)
AT THIS POINT TO ROUTE WIRES FROM
SECURE THE T/R AUDIO STORAGE PLAYBACK UNIT.
VOICE WARNING
WIRES TO EXISTING
WIRE HARNESS. CONNECTOR PLUG
ROUTE PATH ALONG P60783300013
FLOOR TO FORWARD CONNECTOR
PRESSURE BULKHEAD. RECEPTACLE
J60783300013

PEDESTAL WIRE ROUTING LOCATOR

(ADJACENT EQUIPMENT NOT SHOWN FOR CLARITY)
K60-607809-001-02

Thrust Reverser System Improvement

Figure 1 (Sheet 2 of 10)

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 LEARJET 60
Service Bulletin

FS FS FS FS FS
47.23 61.23 75.23 89.23 99.57

BL
AE333
0.00 TERMINAL
JUNCTIONS
E70

FROM P/J501

G G

EGPWS
965-0976-040-226-226
OR
965-0976-040-212-212

LOOKING DOWN
View A-A

K60-607809-001-03

Thrust Reverser System Improvement

Figure 1 (Sheet 3 of 10)

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 LEARJET 60
Service Bulletin

ROUTING FROM AUDIO STORAGE

PLAYBACK UNIT. (NOT YET INSTALLED
TO PILOT CB PANEL)
FS FS FS FS FS FS
164.59 151.19 137.79 124.39 110.99 99.57

AURAL
WARN
MIXER

AUDIO
STORAGE
PLAYBACK
UNIT
BL
RELAY BOX 0.00
T/R VCWS

FWD
GROUND
POINT
201A

ROUTE NEW WIRES FROM T/R VOICE

ROUTING FROM AUDIO STORAGE WARNING UNIT THROUGH FLOOD
PLAYBACK UNIT. (NOT YET INSTALLED LIGHT WIRE HARNESS (LOCATED ON
TO COPILOT CB PANEL) THE FLOOR ON PILOT SIDE OF
PEDESTAL) FORWARD UP TO
FORWARD PRESSURE BULKHEAD.

LOOKING DOWN ON CENTER PEDESTAL SHOWS

WIRE ROUTING FROM VCWU TO PRESSURE BULKHEAD
(SOME EQUIPMENT AND STRUCTURE NOT SHOWN FOR CLARITY)
View B-B
K60-607809-001-04

Thrust Reverser System Improvement

Figure 1 (Sheet 4 of 10)

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 LEARJET 60
Service Bulletin

FS FS FS FS FS FS
164.59 151.19 137.79 124.39 110.99 99.57

PILOT CB PANEL
6018241

TO P/J 501

STGR
16

STGR
20
STGR
22

RELAY BOX ROUTE WIRE

T/R VCWS 607833000103C22 (-801)
AURAL 607833000113C22 (-802)
AUDIO WARN WITH EXISTING WIRING.
STORAGE MIXER T/R VOICE WARNING WIRING
PLAYBACK
T/R VOICE WARNING WIRING TO PILOT CB PANEL.
UNIT
ROUTE WITH EXISTING WIRING

LOOKING OUTBOARD AT PILOT CB PANEL

PILOT T/R VOICE WARNING WIRE ROUTE
(SOME EQUIPMENT AND STRUCTURE NOT SHOWN FOR CLARITY)
View C-C
K60-607809-001-05

Thrust Reverser System Improvement

Figure 1 (Sheet 5 of 10)

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 LEARJET 60
Service Bulletin

ROUTE WIRE FS FS FS FS FS FS
607833000103B22 (-801) 99.57 110.99 124.39 137.79 151.19 164.59
607833000113B22 (-802)
WITH EXISTING WIRING.
T/R VOICE WARNING WIRING
TO COPILOT CB PANEL.
COPILOT
CB PANEL
6018242

TO P/J 501

ROUTE WIRE
607833000107A22 (-801)
RELAY
607833000117A22 (-802)
BOX T/R
607833000115A22 (-802)
VCWS
607833000116A22 (-802)
WITH EXISTING WIRING
FROM T/R VOICE WARNING
TO EGPWS (IF INSTALLED)
AND TERMINAL JUNCTIONS
TJ118 & TJ121 (-802)

AUDIO STORAGE AURAL

PLAYBACK UNIT WARN
MIXER
T/R VOICE WARNING WIRING
ROUTE WITH EXISTING WIRING

LOOKING OUTBOARD AT COPILOT CB PANEL

COPILOT T/R VOICE WARNING WIRE ROUTE
(SOME EQUIPMENT AND STRUCTURE NOT SHOWN FOR CLARITY)
View D-D
K60-607809-001-06

Thrust Reverser System Improvement

Figure 1 (Sheet 6 of 10)

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 LEARJET 60
Service Bulletin

RSM04-27-30S FRAME 6
LBL R/J501 RBL RBL PRESSURE
10.80 10.80 15.50 BULKHEAD

RSM04-27-30S
ROUTE NEW WIRE R/J502
WITH EXISTING WIRING
FROM T/R VOICE WARNING
TO RECEPTACLES R/J501
OR R/J507 FOR EGPWS
(IF INSTALLED) AND TERMINAL
JUNCTIONS TJ118 & TJ121
(-802) AS SHOWN

RSM04-27-30SY
R/J507

BL
0.00
LOOKING FORWARD AT FRAME STATION 99.57
SOCKET #35 FORWARD PRESSURE BULKHEAD WIRE ROUTING

SOCKET #91
SOCKET #90
SOCKET #88
SOCKET #87
SOCKET #86
SOCKET #34
SOCKET #33
SOCKET #32

SOCKET #31

R/J501, R/J502, & R/J507 View E-E

FACE VIEW OF PLUG INSERT
K60-607809-001-07

Thrust Reverser System Improvement

Figure 1 (Sheet 7 of 10)

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 LEARJET 60
Service Bulletin

7.30 in
18.54 cm 4.70 in
11.94 cm

1 INSERT
NAS1836C3-11
FWD
(1 REQUIRED, 2 3.80 in
9.65 cm
8 PLACES)

FWD MID
ACCESS
PANEL (220AC)
2 3.50 in 8.50 in
5410789-032 8.89 cm 21.59 cm

2.90 in
7.37 cm

6.00 in
15.24 cm
4.00 in
10.16 cm

ATTACHMENT LOCATIONS, LOOKING DOWN AT COCKPIT FLOOR PANEL

PANHEAD SCREW DGB37M

MS27039-1-04 GENDER CHANGER
J2 (REF)
(1 REQUIRED, 8 PLACES) 7253
KIT SCREWLOCK FEMALE
(2 REQUIRED)

FLAT WASHER 3
NAS1149F0332P
(1 REQUIRED, 8 PLACES)

PLUG CONNECTOR
206060-1
(REF)

RELAY BOX - T/R VCWS

6078330003-801
FWD MID ACCESS (1 REQUIRED)
AUDIO STORAGE
PLAYBACK UNIT PANEL (220AC)
630A-020 5410789-032
(1 REQUIRED) (RE-IDENTIFIED TO 6084062-808 IF
SB 60-77-2 HAS BEEN COMPLIED WITH)
NOTE
Notes information is found on COMPONENT INSTALLATION
the last sheet of the figure. Detail F K60-607809-001-08

Thrust Reverser System Improvement

Figure 1 (Sheet 8 of 10)

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Page 25 of 33
 LEARJET 60
Service Bulletin

4 TERMINAL
1 2 3 4 5 6 7 8 9 10 11 12
MODULE 12

TJ118

1 2 3 4 5 6 7 8 9 10 11 12

TJ119

1 2 3 4 5 6 7 8 9 10 11 12

TJ120

4 TERMINAL
MODULE 12
1 2 3 4 5 6 7 8 9 10 11 12

INDEX
TJ121 INDICATOR

1 2 3 4 5 6 7 8 9 10 11 12

TJ122

1 2 3 4 5 6 7 8 9 10 11 12

TJ123

REAR VIEW OF TERMINAL

MODULE T/J118 &
T/J121 LAYOUT
TERMINAL MODULE INSTALLATION
LOOKING INBOARD, FROM PILOT SIDE
(EFFECTIVE ONLY FOR AIRCRAFT
60-294, 60-307, 60-319 THRU 60-430)
NOTE View G-G
Notes information is found on
the last sheet of the figure. K60-607809-001-9

Thrust Reverser System Improvement

Figure 1 (Sheet 9 of 10)

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Page 26 of 33
 LEARJET 60
Service Bulletin

NOTES
1 Refer to Chapter 20 of the Maintenance Manual for instructions to install inserts.
Adhesive or epoxy is required but not provided in the service bulletin kits.

2 It is acceptable to relocate mounting holes for audio storage playback unit

and relay box-T/R VCWS ± 2 inch [5.08 cm].

3 Electrically bond in this area. Bond jumper to audio storage playback unit, and
from there to pedestal structure. (Refer to Chapter 20 of the Wiring Manual.)

4 Use insertion/extraction tool P/N M81969/14-02 to install/remove contacts in terminal module.

K60-607809-001-01-10

Thrust Reverser System Improvement

Figure 1 (Sheet 10 of 10)

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Page 27 of 33
 LEARJET 60
Service Bulletin

E42 E289
FR LH THRUST
FWD PED & 26A REVERSER
QUADRENT 10 RELAY PANEL
P8 J8 J1 P86 P5 J5 P719 J1
SP1 SP13
7 C K113A22 N K113B22 L 28V ARM IN
L ARM L DEPLOY

S13 S11 6 B K114A22 P K114B22 M L 28V DEPLOY IN

SP2
L DISARM L STOW
5 A K110B22 MM K110A22 Z STOW
9 E K249B22 DD K249A22 V ARM GND
8 D K112A22 M K112B22 K 28V T/R CONT OUT
SP11 SP12

P60783300013 J60783300013 P60783300011 J1

E6078330003
P60783300013 J60783300013 T/R VCWS
607833000102B22 2 607833000102A22 RELAY BOX
607833000126B22 7 607833000126A22 7
CR5 A3
607833000127B22 8 607833000127A22 8 A2
A1
20
TO R T/R X1
E38 PANEL 607833000128B22 9 607833000128A22 9
COPILOT CB E290 CR3
FR K3
P718 PIN M
PANEL 26 X2 L/H 28V
J3 P22 P4 J4 T/R CONT
607833000129B22 10 607833000129A22 10 POWER
M K89A22 X K89B22 CR6
CB94 SP3
R T/R 607833000103A22
AUTO STOW
P60783300014 J2
E6078330003 T/R
VCWS RELAY BOX
A
1 607833000101A22
607833000103B22 2 A3
A2
A1
E39
X1
PILOT CB 607833000103C22 3 L T/R E6078330001 630A-020
PANEL J2 P31
K1
X2 AUTO 3 AUDIO STORAGE
607833000123A22N 4 STOW
M PLAYBACK UNIT
CB93
POWERED 1
SP4
L T/R SP17
P60783300012 J2
AUTO STOW GP201A TO L T/R
K87B22 PANEL E289 1 L T/R ARM COMMAND IN
(CONTINUED P719 PIN M
1 3 L T/R DEPLOY COMMAND IN
ON SHEET 2) 29 28VDC IN
E230 GP201A
FR J1 P663 607833000121A22N 32 AIRCRAFT GND
26 AURAL
WARNING CH 5 J 12 L AUDIO OUT HI
607833000104A24
MIXER AMP 11 L AUDIO OUT LO
K87A22 I 8 L T/R FAIL ANNUN OUT
GP156 5 L T/R DEPLOYED INPUT
2

J101 P101 TO L T/R

SP9
K81C22 21 K81B22 PANEL
E289
P719 PIN C

E72
ANNUNCIATOR
PANEL E6078330003
T/R VCWS
J2 P767 RELAY BOX
L T/R DEPLOY 18 P60783300011 P60783300011
ANNUNCIATOR CR1
607833000105A22 4 3 607833000105B22

K60-607809-002-01

Wire Diagram for aircraft 60-001 thru 60-293, 60-295 thru 60-306, and 60-308 thru 60-318
Figure 2 (Sheet 1 of 3)

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 LEARJET 60
Service Bulletin

E42 E290
FWD PED & RH THRUST REVERSER
FR RELAY PANEL
QUADRENT 26A

P8 J8 J2 P422 P4 J4 6 P718 J1
SP7 SP14
12 E K84A22 D K84B22 L 28V ARM IN
R ARM R DEPLOY
11
SP8
S12 S10 13 F K85A22 C K85B22 M R 28V DEPLOY IN

R DISARM R STOW

14 H K120B22 PP K120A22 Z STOW

10 F K109B22 NN K109A22 V ARM GND
11 P K83A22 B K83B22 K 28V T/R CONT OUT
SP15 SP16

607833000132B22

607833000130B22
(NOSE INSTALLATION
IF INSTALLED)
AE438
9 P60783300011 J1
EGPWS
(MARK V) MP RP1232(MP) E6078330003
AUDIO INHIBIT 7D
T/R VCWS
P60783300013 J60783300013 RELAY BOX
15 607833000130A22 15
CR7 A3
(AFT FUSELAGE INSTALLATION 607833000131B22 16 607833000131A22 16 A2
IF INSTALLED) A1
22
AE438 X1
9 14 607833000132A22 17
EGPWS CR4
K4 R/H 28V
(MARK V) MP RP1232(MP) X2 T/R CONT
AUDIO INHIBIT 7D POWER
607833000133B22 13 607833000133A22 18
CR8

607833000109A22
607833000110B22 4 607833000110A22
607833000107B22

P60783300011 J1
1 (CONTINUED
FROM SHEET 1) E6078330003 T/R VCWS RELAY BOX

607833000123A22N 14
E6078330001 630A-020
FR 3
6 AUDIO STORAGE
RP501 NO EGPWS MUTE CMD A3 PLAYBACK UNIT
RJ501 A2 1
EGPWS MUTE CMD A1
32 607833000107A22 5
A P60783300012 J2
X1
K2 20 R T/R ARM COMMAND IN
X2 21
6 R T/R DEPLOY COMMAND IN
9 R AUDIO OUT LO
10 R AUDIO OUT HI
607833000125A22 33 EGPWS AUDIO INHIBIT OUT

7 R T/R DEPLOYED INPUT

E72
ANNUNCIATOR
PANEL
11
J4 P765 J100 P100 TO R T/R
SP10 PANEL
R T/R DEPLOY 25 K77C22 21 K77B22
ANNUNCIATOR E290
P718 PIN C E6078330003
T/R VCWS
RELAY BOX
P60783300011 P60783300011
CR2
607833000106A22 13 12 607833000106C22

K60-607809-002-02

Wire Diagram for aircraft 60-001 thru 60-293, 60-295 thru 60-306, and 60-308 thru 60-318
Figure 2 (Sheet 2 of 3)

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 LEARJET 60
Service Bulletin

NOTE
1 Fill all contact positions with contacts.
2 Shields to be terminated into ring terminal and attached to connector and backshell.
Shield and pigtail length to be 4 inches.
3 Use insertion/extraction tool P/N M81969/1-02 to install contacts in connector.
4 Use insertion/extraction tool P/N M81969/16-01 to install contacts in relay.
5 Use insertion/extraction tool P/N M81969/14-01 to install/remove contacts in
connector RP1102P1/2RP1102P1.
6 Use insertion/extraction tool P/N M15570-22-1 to install contacts in connector.
7 Use solder shield termination M83579/2-8 with wire removed to cover shield.
8 Break ground wire from covered wire harness near GS156, then route and terminate wire.
9 If installed.
10 The J8/P8 connector effectivity is Learjet 60-104 and subsequent.
11 All splices must be no more than 6 in [15.24 cm] from the connector.

SOLID LINES Indicate new or rerouted wiring and/or electrical components

DASHED LINES Indicate existing wires and/or electrical components
HASHED LINES Indicate deleted wiring and/or electrical components
CAPPED LINES Indicate capped and stowed wiring

K60-607809-002-03

Wire Diagram for aircraft 60-001 thru 60-293, 60-295 thru 60-306, and 60-308 thru 60-318
Figure 2 (Sheet 3 of 3)

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Page 30 of 33
 LEARJET 60
Service Bulletin

E42 E289
FR LH THRUST
FWD PED & 26A REVERSER
QUADRENT 10 RELAY PANEL
P8 J8 J1 P86 P5 J5 P719 J1
SP1 SP13
7 C K113A22 N K113B22 L 28V ARM IN
L ARM L DEPLOY
11
S13 S11 6 B K114A22 P K114B22 M L 28V DEPLOY IN
SP2
L DISARM L STOW
5 A K110B22 MM K110A22 Z STOW
9 E K249B22 DD K249A22 V ARM GND
8 D K112A22 M K112B22 K 28V T/R CONT OUT
SP11 SP12

P60783300013 J60783300013 P60783300011 J1

E6078330003
P60783300013 J60783300013 T/R VCWS
607833000112B22 2 607833000112A22 RELAY BOX
607833000135B22 7 607833000135A22 7
CR5 A3
607833000136B22 8 607833000136A22 8 A2
A1
20
TO R T/R X1
E38 PANEL 607833000137B22 9 607833000137A22 9
COPILOT CB E290 CR3
FR K3
P718 PIN M
PANEL 26 X2 L/H 28V
J3 P22 11 P4 J4 T/R CONT
607833000138B22 10 607833000138A22 10 POWER
M K89A22 X K89B22 CR6
CB94 SP3
R T/R 607833000113A22
AUTO STOW
P60783300014 J2
E6078330003 T/R
VCWS RELAY BOX
A
1 607833000111A22
607833000113B22 2 A3
A2
A1
E39 L T/R
X1
PILOT CB 607833000113C22 3 AUTO E6078330001 630A-020
PANEL J2 P31
K1
X2 STOW 3 AUDIO STORAGE
607833000124A22N 4 POWERED
M PLAYBACK UNIT
CB93 SP4 1
L T/R SP18
11 P60783300012 J2
AUTO STOW GP201A FR TO L T/R
26 K87B22 PANEL E289 1 L T/R ARM COMMAND IN
(CONTINUED P719 PIN M
1 J5
3 L T/R DEPLOY COMMAND IN
ON SHEET 2) 29 28VDC IN
I
E230 GP201A
K87A22 J1 P663 607833000122A22N 32 AIRCRAFT GND
AURAL
WARNING CH 5 J 12 L AUDIO OUT HI
607833000114A24
MIXER AMP 11 L AUDIO OUT LO
E483 8 L T/R FAIL ANNUN OUT
GP201A
L-DCU 5 L T/R DEPLOYED INPUT
2
J2 E483P2
L T/R DEPLOY 64 1TL5047D22
ANNUNCIATOR TO L T/R
FR PANEL
6 E289
P719 PIN C
RP503 RJ503
TJ118 1TL5047C22 65 1TL5047B22
E484 E6078330003
L-EDC 12A T/R VCWS
FR
12B 6 RELAY BOX
P60783300011 P60783300011
J2 E484P2 12C RP501 RJ501 CR1
L T/R DEPLOY 64 1TL5047E22 12D 607833000115B22 31 607833000115A22 4 3 607833000115C22
ANNUNCIATOR

K60-607809-003-01

Wire Diagram for aircraft 60-294, 60-307 and 60-319 thru 60-430
Figure 3 (Sheet 1 of 3)

Basic Issue: Jun 25/18 THIS PUBLICATION IS AVAILABLE AT: SB 60-78-9

https://my.businessaircraft.bombardier.com Recommended
Page 31 of 33
 LEARJET 60
Service Bulletin

E42 E290
FWD PED & RH THRUST REVERSER
FR RELAY PANEL
QUADRENT 26A

P8 J8 J2 P422 P4 J4 6 P718 J1
SP7 SP14
12 E K84A22 D K84B22 L 28V ARM IN
R ARM R DEPLOY
11
SP8
S12 S10 13 F K85A22 C K85B22 M R 28V DEPLOY IN

R DISARM R STOW

14 H K120B22 PP K120A22 Z STOW

10 F K109B22 NN K109A22 V ARM GND
11 P K83A22 B K83B22 K 28V T/R CONT OUT
SP15 SP16

607833000141B22

607833000139B22
AE438
9 P60783300011 J1
EGPWS
(MARK V) MP RP1232(MP) E6078330003
AUDIO INHIBIT 7D
T/R VCWS
P60783300013 J60783300013 RELAY BOX
15 607833000139A22 15
CR7 A3
607833000140B22 16 607833000140A22 16 A2
A1
22
X1
14 607833000141A22 17
CR4
K4 R/H 28V
607833000117B22 X2 T/R CONT
POWER
607833000142B22 13 607833000142A22 18
CR8

607833000119A22
607833000120B22 4 607833000120A22

P60783300011 J1
1 (CONTINUED E6078330003 T/R VCWS RELAY BOX
FROM SHEET 1)
E6078330001 630A-020
FR 607833000124A22N 14 3
6 AUDIO STORAGE
RP501 RJ501 NO EGPWS MUTE CMD A3 PLAYBACK UNIT
A2 1
EGPWS MUTE CMD A1
32 607833000117A22 5
A P60783300012 J2
X1
K2 20 R T/R ARM COMMAND IN
X2
6 21 R T/R DEPLOY COMMAND IN
9 R AUDIO OUT LO
E483 10 R AUDIO OUT HI
R-DCU 607833000134A22 33 EGPWS AUDIO INHIBIT OUT

J2 2E483P2 7 R T/R DEPLOYED INPUT

R T/R DEPLOY 64 21TL5047D22 TO R T/R
ANNUNCIATOR FR PANEL
6 E290
P718 PIN C
RP504 RJ504
2TL5047C22 65 2TL5047B22
TJ121
E484 E6078330003
R-EDC 12A T/R VCWS
FR
12B 6 RELAY BOX
P60783300011 P60783300011
J2 2E484P2 12C RP501 RJ501 CR2
R T/R DEPLOY 64 21TL5047E22 12D 607833000116B22 30 607833000116A22 13 12 607833000116C22
ANNUNCIATOR

K60-607809-003-02

Wire Diagram for aircraft 60-294, 60-307 and 60-319 thru 60-430
Figure 3 (Sheet 2 of 3)

Basic Issue: Jun 25/18 THIS PUBLICATION IS AVAILABLE AT: SB 60-78-9

https://my.businessaircraft.bombardier.com Recommended
Page 32 of 33
 LEARJET 60
Service Bulletin

NOTE
1 Fill all contact positions with contacts.
2 Shields to be terminated into ring terminal and attached to connector and backshell.
Shield and pigtail length to be 4 inches.
3 Use insertion/extraction tool P/N M81969/1-02 to install contacts in connector.
4 Use insertion/extraction tool P/N M81969/16-01 to install contacts in relay.
5 Use insertion/extraction tool P/N M81969/14-01 to install/remove contacts in
connector RP1102P1/2RP1102P1.
6 Use insertion/extraction tool P/N M15570-22-1 to install contacts in connector.
7 Use solder shield termination M83579/2-8 with wire removed to cover shield.
8 Break ground wire from covered wire harness near GS156, then route and terminate wire.
9 If installed.
10 The J8/P8 connector effectivity is Learjet 60-104 and subsequent.
11 All splices must be no more than 6 in [15.24 cm] from the connector.

SOLID LINES Indicate new or rerouted wiring and/or electrical components

DASHED LINES Indicate existing wires and/or electrical components
HASHED LINES Indicate deleted wiring and/or electrical components
CAPPED LINES Indicate capped and stowed wiring

K60-607809-003-03

Wire Diagram for aircraft 60-294, 60-307 and 60-319 thru 60-430
Figure 3 (Sheet 3 of 3)

Basic Issue: Jun 25/18 THIS PUBLICATION IS AVAILABLE AT: SB 60-78-9

https://my.businessaircraft.bombardier.com Recommended
Page 33 of 33
SERVICE BULLETIN COMPLIANCE RESPONSE
It is necessary that Bombardier Learjet record aircraft having complied with
this Service Bulletin. Please fill in the Service Bulletin and aircraft information CLICK HERE TO EMAIL
below, sign and date the form in the space provided, fold on dotted lines, seal
with tape, and mail completed form to Bombardier Learjet Maintenance Engi- *An email will be opened addressed to
Fracas and this form will be attached.
neering. If mailed within the United States, this form may be mailed to Bom-
bardier Learjet Maintenance Engineering using business reply mail (see Mailing Information:
reverse). This form may be faxed or emailed if preferred. (See mailing infor-
mation provided.) Bombardier Learjet
Maintenance Engineering
WARRANTY - Completion of this response form is required in order to pro-
cess the warranty claim. Therefore, if a warranty allowance is provided in the (MS #78) (FAX 316 946-2305)
Service Bulletin, return a copy of this form with the warranty claim.
fracas_usa@aero.bombardier.com
SMART PARTS - Completion of this response form is required in order to Customer Support
remain, enroll, or re-enroll in the Smart Parts Program.
Learjet, Inc.
Service Bulletin Information

Thrust Reverser System Improvement

SB Title: ___________________________________________________________________________________

60-78-9
Service Bulletin No. _______________________ Basic
Rev No. ____________ 6/25/2018
Date ________________________

Aircraft Information

Model _____________ Serial No. _____________ Flight Hours _______________ Landings ______________

Service Facility Information

Facility Incorporating Bulletin ___________________________________________________________________

Compliance Information
The above referenced Service Bulletin was complied with on the referenced serial number aircraft at the listed air-
craft flight hours/landings:
Actual hours to accomplish Service Bulletin: Access _______ Modify_______ Test(s) _______ Restore ________

Name: (Please Print) ______________________________________________ Date _____________________

Email: __________________________________________________________

Comments
 FOLD HERE FIRST

NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES

BUSINESS REPLY MAIL

FIRST-CLASS MAIL
PERMIT NO. 2928 WICHITA, KS
POSTAGE WILL BE PAID BY ADDRESSEE

ATTN: MAINTENANCE ENGINEERING (MS NO. 78)

LEARJET INC
PO BOX 7707
WICHITA, KS 67277-9801

FOLD HERE LAST. SEAL WITH TAPE. DO NOT STAPLE.

 SERVICE BULLETIN EVALUATION SHEET
CLICK HERE TO EMAIL
YOUR COMMENTS WILL HELP US IMPROVE
*An email will be opened addressed to the
OUR SERVICE BULLETINS SB Group and this form will be attached.

60-78-9
SERVICE BULLETIN: ____________________ Basic DATED: ________________________
REVISION: _________ 6/25/2018

Thrust Reverser System Improvement

TITLE: ____________________________________________________________________________________

POOR FAIR GOOD VERY EXCELLENT

GOOD

HOW EASY IS THE BULLETIN TO UNDERSTAND?

COMMENTS

DOES THE BULLETIN TELL YOU ALL YOU NEED TO KNOW

ABOUT THE JOB?
COMMENTS

DO YOU THINK THE BULLETIN CONVEYS THE BEST WAY

TO DO THE JOB?
COMMENTS

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COMMENTS

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COMMENTS

Actual hours to accomplish Service Bulletin: Access: ______ Modify: _______ Test(s): ______ Restore: _______

PLEASE SUPPLY THE FOLLOWING: NAME: _____________________________________________

OPERATOR: ___________________________________ EMAIL: ____________________________________

AIRCRAFT: _________________________________________ TELEPHONE: _________________________

UPON COMPLETION OF THE EVALUATION FORM, YOU MAY FOLD AND RETURN TO ADDRESS ON THE
REVERSE SIDE OR USE THE SUBMIT BUTTON AT THE TOP TO EMAIL IT.
 FOLD HERE FIRST

NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES

BUSINESS REPLY MAIL

FIRST-CLASS MAIL
PERMIT NO. 2928 WICHITA, KS
POSTAGE WILL BE PAID BY ADDRESSEE

ATTN: TECHNICAL PUBLICATIONS (MS NO. 53)

LEARJET INC
PO BOX 7707
WICHITA, KS 67277-9801

FOLD HERE LAST. SEAL WITH TAPE. DO NOT STAPLE.