Airworthiness Directive Schedule
Engines
Pratt and Whitney Canada JT15D-1A and JT15D-1B
27 May 2010
Notes
1.
This AD schedule is applicable to Pratt and Whitney Canada (P&WC) turbofan
JT15D-1A and JT15D-1B engines.
2.
These engines are fitted on, but not limited to Cessna model 501 aircraft.
3.
The date above indicates the amendment date of this schedule.
4.
New or amended ADs are shown with an asterisk *
Contents
* DCA/JT15D/1
* DCA/JT15D/2
Issued 27 May 2010
Airworthiness Directive Compliance at Initial Airworthiness Certificate Issue .................... 2
HPT Disks Inspection and Replacement ........................................................................ 2
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CAA of NZ
Engines
Pratt and Whitney Canada JT15D-1A and JT15D-1B
* DCA/JT15D/1
Airworthiness Directive Compliance at Initial Airworthiness Certificate Issue
Applicability:
Model JT15D-1A and JT15D-1B engines
Requirement:
Compliance with the following Transport Canada (TC) Airworthiness Directives (as
applicable) is required:
Transport
Canada AD
No:
Pratt & Whitney
Canada Service
Information:
Subject:
AD Requirement:
CF-87-05R1
SB 7257 dated 23
April 1987
Non-conforming Fan
Blades
Remove affected blades
from service
CF-80-26R1
SB 7152 dated 27
Feb 1980, or SB
7258 dated 8 June
1987, or SB 7269
dated 29 March
1988 or later
revisions and
superseding SBs
approved by TC
Bevel Gear Fatigue
Replace accessory
gearbox input drive gear
and bevel gear
CF-91-28
SB 7310 dated 6
June 1991 or later
revision or SB
approved by TC
High Pressure Turbine
Blades
Embody mod per the SB
CF-91-37R1
SB 7288 dated 7
May 1990 and SB
7306 dated 29 May
1991 or later
revisions and
superseding SBs
approved by TC
Emergency Fuel Shutoff Linkage
Rework and replace the
existing emergency fuel
shut-off linkage
CF-2003-17
SB 7590 dated 23
May 2003 or later
TC approved
revisions
Impeller Rear Face
Borescope Inspection
Note:
Each part of this AD (each individual Transport Canada AD) shall be certified in the
aircraft log book separately.
Compliance:
Before issue of a New Zealand Certificate of Airworthiness, or at the next ARA
inspection after the effective date of this AD whichever is the sooner, unless
previously accomplished.
Effective Date:
27 May 2010
* DCA/JT15D/2
Applicability:
HPT Disks Inspection and Replacement
Model JT15D-1, -1A, -1B, -4, -4B, -4C and -4D engines
These engines are installed on, but not limited to Cessna Citation I, Citation II/SII and
Citation 500; Aerospatiale Corvette; Mitsubishi Diamond 1/1A and Agusta S211
aircraft.
Note 1:
Issued 27 May 2010
This AD supersedes Transport Canada AD CF-90-17 dated 31 July 1990.
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CAA of NZ
Engines
Requirement:
Pratt and Whitney Canada JT15D-1A and JT15D-1B
To prevent High Pressure Turbine (HPT) disks from releasing blades, accomplish the
following:
1. For JT15D-4B, -4C and -4D engines not embodied with P&WC SB 7297, and
either SB 7296 or SB 7307:
Accomplish the borescope inspection outlined in Temporary Revision (TR) 72-32
applicable to the JT15D-4C Maintenance Manual P/N 3032942 or TR 72-100 to the
JT15D-1/D-4 Maintenance Manual P/N 3017542 whichever is applicable.
If forward blade movement is found which exceeds the 0.020-inch limit specified in
the Maintenance Manual, the high pressure turbine assembly shall be removed and
replaced with a serviceable assembly before further flight.
2. For JT15D-4B, -4C and -4D engines not embodied with P&WC SB 7297, and
either SB 7296 or SB 7307:
Embody P&WC SB 7297 dated 18 December 1990 and either SB 7296 dated 8
February 1991 or SB 7307 dated 15 May 1991, or their later approved revisions, or
the superseding approved SBs.
Note 2:
Compliance with requirement 2 is a terminating action for the repetitive inspections
mandated by requirement 1 of this AD.
3.
For JT15D-1, -1A, -1B and -4 engines not embodied with P&WC SB 7297:
Accomplish the borescope inspection outlined in TR 72-100 applicable to the JT15D1/D-4 Maintenance Manual P/N 3017542.
If forward blade movement is found which exceeds the 0.020-inch limit specified in
the Maintenance Manual, the high pressure turbine assembly shall be removed and
replaced with a serviceable assembly before further flight.
4.
For JT15D-1, -1A, -1B and -4 engines not embodied with P&WC SB 7297:
Embody P&WC SB 7297 dated 18 December 1990 or later approved revisions, or the
superseding approved SBs.
Note 2:
Compliance with requirement 4 is a terminating action for the repetitive inspections
mandated by requirement 1 of this AD.
Note 3:
P&WC SIL 7046 dated 26 March 1991 and SIL 7037R1 dated 8 May 1991 pertains to
the subject of this AD and provides preliminary information and inspection
requirements.
(Transport Canada AD CF-91-18 refers)
Compliance:
1. Within the next 25 hours TIS or by 7 June 2010 whichever occurs sooner,
unless previously accomplished and thereafter at intervals not to exceed 300 hours
TIS until requirement 2 of this AD is accomplished.
2. At the next scheduled or unscheduled maintenance inspection when the high
pressure turbine (HPT) area is exposed.
3. Within the next 300 hours TIS unless previously accomplished, and thereafter at
intervals not to exceed 300 hours TIS until requirement 4 of this AD is accomplished.
4. At the next scheduled or unscheduled maintenance inspection when the high
pressure turbine (HPT) area is exposed.
Effective Date:
Issued 27 May 2010
27 May 2010
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CAA of NZ
