Honeywell International Inc.

1300 W. Warner Road

Tempe, Arizona 85284-4282
U.S.A.
CAGE: 59364
Telephone: 800-601-3099 (Toll Free U.S.A./Canada)
Telephone: 602-365-3099 (International Direct)

Website: https://aerospace.honeywell.com

SERVICE BULLETIN
PNEUMATIC - FAN AIR MODULATING VALVE - REWORK FAN AIR MODULATING VALVE PN 63292070-3
TO PN 63292070-4 BY UPGRADING ACTUATOR PISTON, SEAL, GUIDE

Legal Notice
Export Control

These items are controlled by the U.S. government and authorized for export only to the country of ultimate
destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred,
or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or
end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval
from the U.S. government or as otherwise authorized by U.S. law and regulations.

ECCN: 9E991.

Proprietary Information
HONEYWELL - CONFIDENTIAL
COPYRIGHT BY HONEYWELL INTERNATIONAL INC. (“HONEYWELL”). ALL RIGHTS RESERVED. THIS
DOCUMENT AND ALL INFORMATION CONTAINED HEREIN ARE THE CONFIDENTIAL AND PROPRIETARY
INFORMATION OF HONEYWELL AND CONTAIN HONEYWELL TRADE SECRETS. NEITHER THIS DOCUMENT
NOR THE INFORMATION CONTAINED HEREIN MAY, IN WHOLE OR IN PART, BE USED, DUPLICATED,
OR DISCLOSED FOR ANY PURPOSE WITHOUT PRIOR WRITTEN PERMISSION OF HONEYWELL.
PLEASE REVIEW THE TERMS OF THIS AGREEMENT CAREFULLY BEFORE USING THIS DOCUMENT,
AS BY USING IT, YOU ACKNOWLEDGE THAT YOU HAVE REVIEWED THIS AGREEMENT AND AGREE TO
BE BOUND BY ITS TERMS AND CONDITIONS.

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HONEYWELL MATERIALS LICENSE AGREEMENT

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or any person or entity whose actions or functions are intended to support “military end uses.” “Military End Uses”
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PERFORMANCE, DEALING, USAGE, OR TRADE, WHICH ARE HEREBY EXPRESSLY DISCLAIMED, OR (ii)
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WARNING: BEFORE THE MATERIALS CALLED OUT IN THIS PUBLICATION ARE USED, KNOW THE
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WARNING: HONEYWELL ASSUMES NO RESPONSIBILITY FOR ANY HONEYWELL EQUIPMENT WHICH
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Copyright - Notice
Copyright 2022 Honeywell International Inc. All rights reserved.
Honeywell is a registered trademark of Honeywell International Inc.
All other marks are owned by their respective companies.

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Transmittal Information
ATA Number 63292070-36-0003 (Publication Number D202203002260)
Summary
This is the INITIAL release.
Refer to Paragraph 4.A. for a list of the acronyms and abbreviations used in this service bulletin.
Revision History
This service bulletin has had no revision(s) as shown in Table 1.
Table 1. Revision History

Revision Number Revision Date

0 27 Jul 2022

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1. Planning Information
A. Effectivity
(1) This service bulletin is applicable to the component(s) given in Table 2.
Table 2. Applicable Component(s)

Before
PN Equipment Designator Serial Number Application
63292070-3 FAMV ALL B-737 MAX

B. Concurrent Requirements
(1) Do the service bulletin(s) given in Table 3 with (or before) this service bulletin. You can
do the service bulletin(s) independently.
Table 3. Concurrent Service Bulletin(s)

Service Bulletin Number Service Bulletin Title

63292070-36-0002 Engine Components - Fan Air Modulating Valve (FAMV) PN 63292070-3 - To
Inspect Servo Housing PN 63001443-3 or 4 and Actuator Cover PN
63003056-1 for Foreign Object Damage (FOD)

(2) For SN 149 and lower (series 1) inspect mounting bolts (40, IPL Figure 1) and replace
any bolts, PN 63002206-1 with PN 63003374-1 per CMM.
(3) For SN 1018 and lower, SPB D202106001810: The diaphragms/servo stack (Items
Feedback servo housing, both Air diaphragms, Diaphragm spacer, Diaphragm retainer,
Diaphragm retaining plate) must be replaced with latest version prior to incorporating
this SB.

C. Reason
(1) Problem
(a) Boeing 737 MAX FAMV PN 63292070-3 is experiencing a high rate of seal
failures that prevent the FAMV actuator from closing the flappers.
(2) Background
(a) FAMVs removed for fault codes 36-12020/36-12021, or 36-12030/36-12031
have a high incidence of seal tears identified as the primary root cause of the
fault code.
(3) Benefits
(a) Honeywell determined seal tears can be reduced/eliminated by adding a guide
to the actuator piston to reduce seal damage.
(4) Action
(a) This SB replaces the existing actuator piston and seal with a new piston, seal
and guide. The upgrade requires a shop visit to accomplish.

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D. Description
(1) This service bulletin gives instructions to replace the existing actuator piston and seal
with a new piston, seal and guide.
(2) The MOD is optional for SPEX Program units if the repair requires implementation.

E. Compliance
(1) This service bulletin, recommended by Honeywell, is to be accomplished as each unit
is returned to the shop for inspection, test, or repair.

F. Approval
(1) This service bulletin has been reviewed by Boeing and the FAA. The repairs/modifications
comply with FAR part 25 and are approved for installation on aircraft model Boeing 737
MAX.

G. Manpower
(1) Approximately 4 hours to remove and replace parts required to modify valve per this
SB.

H. Weight and Balance

(1) None.

I. Electrical Load Data

(1) Not applicable.

J. Software Accomplishment Summary

(1) Not applicable.

K. References
(1) Publications.
(a) The Honeywell publication(s) used to do this service bulletin is/are given in
Table 4.
Table 4. Honeywell Publication(s)

CMM
Outline PN ATA Number Revision
63292070 36-12-32 2

NOTE: Unless specified differently, you can use subsequent revisions.

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L. Other Publications Affected

(1) The same as the publication(s) given in Paragraph 1.K.(1).

M. Interchangeability or Intermixability of Parts

(1) The aircraft interchangeability data for this component is controlled by Boeing.

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2. Material Information
A. Material - Price and Availability
(1) For available parts, supply times, necessary test documentation, applicable test material
prices, and repair support information, go to:
https://aerospace.honeywell.com
Registered users can enter their Honeywell ID and password. New users must register
to create a Honeywell ID.
NOTE: To speak with Honeywell personnel:
Honeywell
Aerospace Contact Team
Telephone: 800-601-3099 (Toll Free U.S.A./Canada)
Telephone: 602-365-3099 (International Direct)

B. Industry Support Information

(1) Units can be sent to the authorized Honeywell repair facility/facilities as follows:
Honeywell - Tempe
1300 W. Warner Road
Tempe, AZ 85284-2896

Honeywell TAECO Aerospace (Xiamen) Co., Ltd.

No. 20, Dailiao Road
Xiamen Gaoqi International Airport
Xiamen, Fujian, China, 361006
NOTE: At the release time of this service bulletin, the repair facility/facilities given
above is/are the only location(s) at which this FAMV can be modified or
repaired. New contracts can be issued after the distribution date of the service
bulletin to allow other authorized Honeywell repair facilities to do modifications
and repairs. Contact Honeywell or your local Honeywell field service
representative for other authorized Honeywell repair facilities.
(2) Units returned to an authorized Honeywell repair facility for repair and/or overhaul will
have this service bulletin done without additional charge.
(3) Necessary repairs that are outside the scope of this service bulletin, and not otherwise
included in the Honeywell warranty, will be performed on a chargeable basis.
(4) Refer to Paragraph 2.C. for information on parts necessary to do this service bulletin.
(5) On-wing labor for valve removal and replacement is eligible for a reimbursement credit
at the applicable Honeywell standard reimbursement rate. Claims not to exceed 3 hrs.
Claims must be submitted to Honeywell Warranty.
(6) Honeywell will reimburse inbound shipping costs. Operators will need to submit a warranty
claim for the shipping costs. Honeywell will incur the cost to return FAMV to operator.

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C. Material Necessary for Each Component

(1) Refer to Table 5 for material to be purchased and to Table 6 for the
instructions/disposition codes.
NOTE: The illustrated parts catalogs and spare parts bulletins dated later than the
original issue date of this service bulletin can introduce different parts. Refer
to these documents before you order parts.
NOTE: The parts usually discarded when you access the area, referred to in this
service bulletin, are not included.
NOTE: The vendor names, addresses and part numbers in the parts list that follow
must not be construed as an authorization of the vendor, pursuant to FAA
regulations, to ship directly to the user. Neither must it be construed as a
certification by Honeywell that parts shipped by vendors directly to users will
conform to the type design or that such parts are airworthy or safe for
installation.
Table 5. Purchased Material

Unit Instructions/
1
New PN Keyword/Nomenclature Old PN Qty Price Disposition Codes
63005713-1 Seal Assembly 63003519-1 2 $862.96 F
63005714-1 Actuator Piston 63001267-2 2 $1403.56 F
63005715-1 Piston Guide NA 2 $243.87 Q
63005704-2 Nameplate 63003114-2 1 $188.22 F
NOTES:
1. Information regarding price and availability can be obtained from the Honeywell Product Catalog at
https://aerospace.honeywell.com.
2. Pricing listed above good through December 2025.

Table 6. Instructions/Disposition Codes

Code Description
Disposition Code F Discard the removed part and replace with a new part.
Disposition Code Q Added part.

D. Material Necessary for Each Spare

(1) Not applicable.

E. Re-identified Parts
(1) Not applicable.

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F. Tooling - Price and Availability

(1) Not applicable.

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3. Accomplishment Instructions
A. General
WARNING: BEFORE YOU USE A MATERIAL, REFER TO THE MANUFACTURER'S
SAFETY DATA SHEETS. SOME MATERIALS CAN BE DANGEROUS.

CAUTION: DO NOT USE MATERIALS THAT ARE NOT EQUIVALENT TO

HONEYWELL-SPECIFIED MATERIALS. MATERIALS THAT ARE NOT
EQUIVALENT CAN CAUSE DAMAGE TO THE EQUIPMENT AND CAN MAKE
THE WARRANTY NOT APPLICABLE.

CAUTION: DO NOT HIT OR LET THE UNIT FALL DURING THESE PROCEDURES. THIS
UNIT CONTAINS AN ASSEMBLY THAT CAN BE DAMAGED FROM INCORRECT
USE.

CAUTION: DO THESE PROCEDURES IN A CLEAN ENVIRONMENT TO PREVENT

DAMAGE TO MECHANICAL COMPONENTS.

(1) Obey the precautions.

(2) The manual(s) given in Paragraph 1.K. of this service bulletin contain the disassembly,
cleaning, check, assembly, and test instructions. This/These manual(s) must be used
to complete this service bulletin.
(3) CMM 36-12-32 contains the disassembly, cleaning, check, assembly, and test instructions
and must be used to complete this service bulletin.

B. Procedure
(1) Refer to the CMM given in Paragraph 1.K.(1) to do this service bulletin.
(2) Disassemble the actuator cover (30, IPL Figure 3 and IPL Figure 4). Refer to the CMM
given in Paragraph 1.K.(1).
(3) Remove the screw (50), washer (60), actuator piston (70), seal assembly (80), washers
(90, 110), and helical spring (100). Discard piston (70), and seal assembly (80).
(4) Refer to Figure 1 and Figure 2 for all the item numbers listed in below procedures.
CAUTION: SEAL ASSEMBLY EASILY DAMAGED. USE CAUTION WHEN IT IS BEING
INSTALLED. NEVER INSTALL SEAL WITHOUT PUSH TOOL.

(5) Use 79001746-1, piston seal install tool and install the new seal assembly PN
63005713-1, (80B) and Install new piston guide PN 63005715-1, (75) onto the new
actuator piston PN 63005714-1, (70A). Refer to Figure 3 for piston seal orientation.
Ensure piston guide and piston seal are installed in the correct locations per Figure 3.
(6) Attach the washer (110), helical spring (100), washer (90), and actuator piston (70A)
with screw (50), and washer (60) to the connecting link (160). Torque screw (50) to 50
to 55 in-lb (5.65 to 6.21 Nm).
(7) Attach the actuator cover (30) with bolts (10) and washers (20). Torque bolts (10) to 50
to 55 in-lb (5.65 to 6.21 Nm).

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(8) Refer to CMM given in Paragraph 1.K.(1) to complete re-assembly process.

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Figure 1. (Sheet 1 of 1) Valve Body

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Key for Figure 1 (Sheet 1)

10 DOUBLE HEXAGON BOLT 75 PISTON GUIDE

20 FLAT WASHER 80B SEAL ASSEMBLY
30 ACTUATOR COVER 90 WASHER
40 PREFORMED PACKING 100 HELICAL SPRING
50 HEX HEAD SCREW 110 WASHER
60 FLAT WASHER 160 CONNECTING LINK
70A ACTUATOR PISTON 330 VALVE BODY

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Figure 2. (Sheet 1 of 1) Valve Body

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Key for Figure 2 (Sheet 1)

10 DOUBLE HEXAGON BOLT 75 PISTON GUIDE

20 FLAT WASHER 80B SEAL ASSEMBLY
30 ACTUATOR COVER 90 WASHER
40 PREFORMED PACKING 100 HELICAL SPRING
50 HEX HEAD SCREW 110 WASHER
60 FLAT WASHER 160 CONNECTING LINK
70A ACTUATOR PISTON 350 VALVE BODY

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Figure 3. (Sheet 1 of 1) Seal and Guide installation locations and orientation

C. Re-identification of Equipment
(1) To re-identify fan air modulating valve replace plate PN 63003114-2 (30A, IPL Figure
1, refer to CMM 36-12-32) with new plate PN 63005704-2.
Table 7. Series Number Data

Old PN New PN
63292070-3 series 1 or 2 63292070-4 Mod 1
63292070-3 series 3 or Mod 2 63292070-4 no series/mod number

NOTE: 1. Nameplate with SN marking will remain unchanged through this

modification.
2. At the time of ordering plate specify per Table 7 mod or no mod marking.

(2) Orient and locate as shown per (30, IPL Figure 1, refer to CMM 36-12-32).
(3) Coat surface and adjacent perimeter with Nycote 7-11 after installation.
Supplier:
Nycote Laboratories Corporation
12750 Raymer St.
North Hollywood, CA 91605

D. Test
(1) Refer to the TEST section of CMM 36-12-32 to do this service bulletin.
(2) This service bulletin will not have an effect on the test procedures of CMM 36-12-32.

E. Close-up
(1) Not applicable.

27 Jul 2022 63292070-36-0003

Revision 0, 27 Jul 2022 Page 19
Publication Number D202203002260
© Honeywell International Inc. Do not copy without express permission of Honeywell.
 SERVICE BULLETIN
63292070

4. Appendix
A. Appendix A, Acronyms and Abbreviations
(1) Refer to Table 8 for a list of the acronyms and abbreviations used in this service bulletin.
Table 8. Acronyms and Abbreviations

Term Full Term

ATA Air Transport Association
CAGE Commercial and Government Entity
CD-ROM Compact Disc Read Only Memory
CFR Code of Federal Regulations
CMM Component Maintenance Manual
ECCN Export Control Classification Number
FAA Federal Aviation Administration
FAMV Fan Air Modulating Valve
FAR Federal Aviation Regulation
HCS Hazard Communication Standard
in-lb inch pound(s)
IPL Illustrated Parts List
MOD modification
NA Not applicable
Nm Newton meter(s)
ODA Organization Designation Authorization
OSHA Occupational Safety and Health Administration
PMA Parts Manufacturer Approval
PN part number
Qty quantity
SB Service Bulletin
SN serial number

27 Jul 2022 63292070-36-0003

Revision 0, 27 Jul 2022 Page 20
Publication Number D202203002260
© Honeywell International Inc. Do not copy without express permission of Honeywell.