# Pratt & Whitney JT9D-7Q - Type: Engine model (FAA registry) - Registry code: 51551 - Manufacturer (registry): P & W - Model: JT9D-7Q - Engine type: Turbo-fan - Power: 51,900 lb thrust - Data sheet: [TCDS E3NE](https://openairdocs.org/tcds/E3NE) (OpenAirDocs) - Holder: Pratt & Whitney - Installed in: 0 registered aircraft - Page: https://openairdocs.org/engine/pratt-whitney-jt9d-7q Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2021-09-10](https://openairdocs.org/ad/2021-09-10): Turbine Engine Compressor Section · Pratt & Whitney JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective May 27, 2021 - [AD 2005-05-13](https://openairdocs.org/ad/2005-05-13): High pressure turbine (HPT) second stage airseals · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Apr 14, 2005 - [AD 2000-23-14](https://openairdocs.org/ad/2000-23-14): No. 4 Bearing Area · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 11 more. Effective Jan 19, 2001 - [AD 98-21-22 R1](https://openairdocs.org/ad/98-21-22-R1): High Pressure Compressor Disks · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 8 more. Effective Jan 18, 2000 - [AD 99-14-08](https://openairdocs.org/ad/99-14-08): Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Sep 13, 1999 - [AD 99-11-09](https://openairdocs.org/ad/99-11-09): Diffuser Case Rear Rail · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Jul 26, 1999 - [AD 99-04-05](https://openairdocs.org/ad/99-04-05): Rear Skirt Ddiffuser Case Inspection · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Apr 12, 1999 - [AD 97-25-10 R1](https://openairdocs.org/ad/97-25-10-R1): (HPT) Disks · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 5 more. Effective Jul 29, 1998 - [AD 96-25-10](https://openairdocs.org/ad/96-25-10): Design Turbine Exhaust Case · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Feb 18, 1997 - [AD 94-15-16](https://openairdocs.org/ad/94-15-16): Engine Control System Accessories · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 9 more. Effective Oct 14, 1994 - [AD 93-15-04](https://openairdocs.org/ad/93-15-04): Fuel Nozzle And Support Assembly · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Nov 19, 1993 - [AD 93-14-20](https://openairdocs.org/ad/93-14-20): Vane Cluster Assembly · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Aug 27, 1993 - [AD 86-09-01 R1](https://openairdocs.org/ad/86-09-01-R1): Turbine Vane Antirotation Pin Failure · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-59A and 9 more. Effective Jul 6, 1988 - [AD 78-16-05](https://openairdocs.org/ad/78-16-05): Sixth Stage Turbine Disks · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Sep 12, 1978 - [AD 76-24-03](https://openairdocs.org/ad/76-24-03): Fan Blades · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Dec 30, 1976 - [AD 76-12-03](https://openairdocs.org/ad/76-12-03): Sixth Stage Turbine Disk · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Jun 22, 1976 - [AD 73-16-05](https://openairdocs.org/ad/73-16-05): Fourth and Fifth Stage Turbine Discs · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Aug 15, 1973 Historical (superseded or no longer in force): - [AD 2012-04-15](https://openairdocs.org/ad/2012-04-15) (historical): Engine · Pratt & Whitney Division JT9D-20J, JT9D-3A, JT9D-59A and 16 more. Effective Apr 23, 2012 - [AD 2007-05-17](https://openairdocs.org/ad/2007-05-17) (historical): Airworthiness Limitations Section (ALS) · Pratt & Whitney Division JT9D-20J, JT9D-3A, JT9D-7 and 15 more. Effective Apr 12, 2007 - [AD 2002-10-07](https://openairdocs.org/ad/2002-10-07) (historical): High Pressure Turbine (HPT) Second Stage Airseals · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Jun 27, 2002 - [AD 2002-08-11](https://openairdocs.org/ad/2002-08-11) (historical): Airworthiness Limitations Section (ALS) - Critical Life-Limited Parts · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective May 28, 2002 - [AD 2000-01-13](https://openairdocs.org/ad/2000-01-13) (historical): Pratt & Whitney Division JT9D-7, JT9D-70A, JT9D-7A and 13 more. Effective Feb 23, 2000 - [AD 99-08-12](https://openairdocs.org/ad/99-08-12) (historical): Maintenance Program, Mandatory Inspections · Pratt & Whitney Division JT9D-20J, JT9D-3A, JT9D-59A and 16 more. Effective May 13, 1999 ## Information bulletins (advisory) (3) - [SAIB NE-02-30](https://openairdocs.org/saib/NE-02-30): . Issued Jun 3, 2002 - [SAIB NE-02-21](https://openairdocs.org/saib/NE-02-21): . Issued Mar 15, 2002 - [SAIB NE-02-01](https://openairdocs.org/saib/NE-02-01): . Issued Oct 5, 2001 ## Registered aircraft None registered with this engine model now. ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (258, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR KCSA20120806009](https://openairdocs.org/sdr/KCSA20120806009), Aug 6, 2012: ENGINE. MALFUNCTIONED. CLIMBING THRU FL 26.0 NR 3 ENGINE EXPERIENCED A LOUD BANG FOLLOWED BY VIBRATION. ENGINE WAS SHUTDOWN IAW QRH PROCEDURES, NO FIRE LIGHT ILLUMINATED. AFTER SHUTDO - [SDR KCSA101196](https://openairdocs.org/sdr/KCSA101196), Dec 19, 2010: SKIN. DAMAGED. NR3 PYLON INBD SKIN DAMAGED ALONG BOTTOM EDGE, NAC STA 215 TO 222. - [SDR KCSA101197](https://openairdocs.org/sdr/KCSA101197), Dec 19, 2010: SKIN. DAMAGED. NR4 PYLON INBD SKIN DAMAGED ALONG BOTTOM EDGE, NAC STA 200. - [SDR KCSA101191](https://openairdocs.org/sdr/KCSA101191), Dec 2, 2010: LIGHT. INOPERATIVE. L1 DOOR OPENING FWD EMERGENCY EXIT LIGHT INOP. - [SDR KCSA08032](https://openairdocs.org/sdr/KCSA08032), Apr 20, 2008: FIRE WARNING. ACTIVATED. NR 3 ENG FIRE INDICATION DURING CLIMBOUT THROUGH 4000 FT APPROX 5 MIN INTO FLIGHT. - [SDR NWAA072986743](https://openairdocs.org/sdr/NWAA072986743), Sep 2, 2007: ENGINE. FLAMED OUT. DURING CRUISE, THE NR 4 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED. PER THE COM THE ENGINE WAS OPERATED AT REDUCED THRUST. THE ENGINE SUBSEQUENTLY EXPERIENCED A - [SDR UPS07450335](https://openairdocs.org/sdr/UPS07450335), Jul 3, 2007: PLATE. MISINSTALLED. INSPECTION TYPE: C M/D BS 940 RT TENSION TIE FWD ATT STEEL PLATE UPPER ROW MOST IB FASTENER HOLE FOUND SHORT EDGE MARGIN. M/DECK BS 940 RT TENSION TIE FWD ATTAC - [SDR KCSA07054](https://openairdocs.org/sdr/KCSA07054), Jun 24, 2007: ENGINE. STALLED. NR 4 ENG SILENT STALLED DURING FLT IDLE DECEL AT 25000FT, C/W ALL APPLICABLE KA QRH PROCEDURES, 2 RESTART ATTEMPTS UNSUCCESSFUL MAX EGT 617 DEGREE, WINDMILL PAR - [SDR KCSA071096](https://openairdocs.org/sdr/KCSA071096), Mar 29, 2007: STRINGER. GOUGED. STA-2380 STR-46R HAS GOUGE. - [SDR KCSA071097](https://openairdocs.org/sdr/KCSA071097), Mar 29, 2007: FLOORBEAM. DENTED. STA 1720 RBL 46 FLOORBEAM UPPER CAP DENTED WL 118. - [SDR KCSA071098](https://openairdocs.org/sdr/KCSA071098), Mar 29, 2007: FLOORBEAM. DAMAGED. UPPER DECK FLOORBEAM STA 420 RBL 5 HAS ELONGATED FASTENER HOLE IN UPPER CHORD FWD SIDE. - [SDR KCSA071099](https://openairdocs.org/sdr/KCSA071099), Mar 29, 2007: BULKHEAD. DENTED. AFT PRESSURE BULKHEAD HAS 2 DENTS STA 2382, WL 190, RBL 40. - [SDR KCSA071100](https://openairdocs.org/sdr/KCSA071100), Mar 29, 2007: FRAME. CHAFED. STA 1720 RBL 46 BOTTOM OF FRAME WEB HAS 2 SMALL HOLES FROM CHAFING. - [SDR KCSA071089](https://openairdocs.org/sdr/KCSA071089), Mar 28, 2007: SEAT TRACK. BENT. AFT PIT SEAT TRACK FLANGE BENT AT BS 1905, LBL-25 - [SDR KCSA071090](https://openairdocs.org/sdr/KCSA071090), Mar 28, 2007: FLOORBEAM. DENTED. AFT PIT FLOORBEAM UPPER CAP DENTED AT BS 1720, RBL 46. - [SDR KCSA071091](https://openairdocs.org/sdr/KCSA071091), Mar 28, 2007: FLOORBEAM. BENT. AFT PIT FLOORBEAM UPPER CAP BENT AT BS 1580, RBL 54. - [SDR KCSA071092](https://openairdocs.org/sdr/KCSA071092), Mar 28, 2007: BULKHEAD. DENTED. AFT PRESSURE BULKHEAD HAS (2) SMALL DENTS LBL 45, WL 210, STA 2400. - [SDR KCSA071093](https://openairdocs.org/sdr/KCSA071093), Mar 28, 2007: FLOORBEAM. CORRODED. STA 360 FLOORBEAM UPPER CHORD HAS AREA OF CORROSION AT LBL 34, WL 312. - [SDR KCSA071087](https://openairdocs.org/sdr/KCSA071087), Mar 27, 2007: SEAT TRACK. CORRODED. MAIN DECK SEAT TRACK CORRODED AT BS 1670, LBL 76, WL 200. - [SDR KCSA071085](https://openairdocs.org/sdr/KCSA071085), Mar 27, 2007: SHEAR WEB. CRACKED. MAIN DECK SLOPING, SHEAR WEB CRACKED AT FORWARD IB CORNER AFT OF TENSION TIE AT BS 820, RBL 77, STR 9R. - [SDR KCSA071086](https://openairdocs.org/sdr/KCSA071086), Mar 27, 2007: SHEAR WEB. CRACKED. MAIN DECK SLOPING SHEAR WEB CRACKED AT FORWARD I/B CORNER AFT OF TENSION TIE AT BS 820, LBL 77, STR 9L. - [SDR KCSA071088](https://openairdocs.org/sdr/KCSA071088), Mar 27, 2007: SHEAR TIE. CRACKED. MAIN DECK FUSELAGE FRAME SHEAR TIE CRACKED ON BOTH SIDES OF STR 11L. - [SDR NWAA070766729](https://openairdocs.org/sdr/NWAA070766729), Mar 4, 2007: FUEL FILTER. DIRTY. DURING CRUISE AT FL390, IN CODE 5 TURBULENCE, NR 2 ENGINE FLAMED OUT. DESCENDED TO FL270 AND SUCCESSFULLY RESTARTED ENGINE. FLIGHT CONTINUED TO NRT AND LANDED W - [SDR KCSA071094](https://openairdocs.org/sdr/KCSA071094), Feb 28, 2007: BULKHEAD. DENTED. AFT PRESSURE BULKHEAD HAS SEVERAL SMALL DENTS RBL 30, WL 200, STA 2390. - [SDR KCSA071095](https://openairdocs.org/sdr/KCSA071095), Feb 28, 2007: BULKHEAD. DENTED. AFT PRESSURE BULKHEAD HAS SEVERAL SMALL DENTS RBL 55, WL 220, STA 2400. - [SDR 0602316730](https://openairdocs.org/sdr/0602316730), Oct 19, 2006: ENGINE. STALLED. DURING CLIMB NR 2 ENGINE EXPERIENCED AN OVERTEMP WITH AUDIBLE COMPRESSOR STALL. THE ENGINE WAS SHUTDOWN, APPROXIMATELY 120,000 POUNDS OF FUEL WERE DUMPED AND TH - [SDR WRNA200600035](https://openairdocs.org/sdr/WRNA200600035), Oct 14, 2006: ENGINE. UNSERVICEABLE. DURING CLIMB-OUT OF MIA AT APPROX 18,000 FEET, THERE WAS A LOUD BANG FROM NR 3 ENGINE WITH A SPIKE IN EGT TO 780C AND FLUCTUATING EPR. ENGINE WAS SHUT DOWN, 19, - [SDR UPS06448216](https://openairdocs.org/sdr/UPS06448216), Oct 9, 2006: BATTERY. INOPERATIVE. FOUND EMERG LT AT MAIN CARGO DECK ENTRANCE INOP, LT ASSY ON REQ A863705. REMOVED AND REPLACED BATTERY ASSY IAW MM 33-51-00. OPS CK OK. - [SDR UPS06448249](https://openairdocs.org/sdr/UPS06448249), Oct 3, 2006: SKIN. CORRODED. INSPECTION TYPE: C FX BS 2180-2186 S46-47R EXISTING REPAIR REMOVE REQUIRE FOR CUTOUT EVALUATION. CORROSION BLEND OUT 0.048 INCH X 1INCH X .7500 INCH, FX BS 2180 - [SDR UPS06448206](https://openairdocs.org/sdr/UPS06448206), Sep 26, 2006: VERTICAL BEAM. CRACKED. INSPECTION TYPE-C NR 2L MED FWD LOWER CORNER VERTICAL BEAM FOUND CRACK APPROX .7500 INCH LONG. NR 2L MED FWD LOWER CORNER VERTICAL BEAM REPAIRED IAW SRM 52-10-0 - [SDR UPS06448207](https://openairdocs.org/sdr/UPS06448207), Sep 26, 2006: VERTICAL BEAM. CRACKED. INSPECTION TYPE-C NR 1R MED FWD LOWER CORNER VERTICAL BEAM FOUND CRACK APPROX 1.5 INCH LONG. NR 1R MED FWD LOWER CORNER VERTICAL BEAM REPAIRED IAW SRM 52-10-02 - [SDR UPS06448211](https://openairdocs.org/sdr/UPS06448211), Sep 26, 2006: VERTICAL BEAM. CRACKED. INSPECTION TYPE-C NR 4L MED FWD LOWER CORNER VERTICAL BEAM FOUND CRACK APPROX 1 INCH LONG. NR 4L MED FWD LOWER CORNER VERTICAL BEAM REPAIRED IAW SRM 52-10-02 FI - [SDR UPS06448208](https://openairdocs.org/sdr/UPS06448208), Sep 23, 2006: FITTING. CORRODED. INSPECTION TYPE-C FX LT BS 980 STR 38L UPPER AND LOWER DRAG SPLICE FITTINGS ATT BOLT HOLE AREA FOUND CORROSION. CORROSION BLEND OUT 0.092 INCH BY 1.5 INCH BY 3 - [SDR UPS06448212](https://openairdocs.org/sdr/UPS06448212), Sep 23, 2006: ATTACH FITTING. CORRODED. INSPECTION TYPE-C CORROSION FOUND AT 1 FASTENER HOLE AT FRAME WEB ATTACH FITTING LOCATED AT BS 979 S38L. FWD CARGO COMPT BS979 S38L FRAME ATTACHED FTG REPLACED - [SDR UPS06448209](https://openairdocs.org/sdr/UPS06448209), Sep 22, 2006: VERTICAL BEAM. CRACKED. INSPECTION TYPE-C M/D RT NR 5 DOOR INTERIOR FWD LWR CORNER VERTICAL BEAM FOUND CRACK, CRACK LENGTH 4.7500 INCH APPROX. M/D RT NR 5 DOOR INTERIOR FWD LOWER CORNE - [SDR WRNA200600018](https://openairdocs.org/sdr/WRNA200600018), Jun 6, 2006: ENGINE. MALFUNCTIONED. DURING TAKEOFF, A BALL OF FIRE FROM THE LEFT SIDE WAS REPORTED ACCOMPANIED WITH A LOUD BANG, CREW BELIEVED NR 1 ENGINE HAD FAILED AND ABORT OF TAKEOFF WAS INITI - [SDR P5CA0601454](https://openairdocs.org/sdr/P5CA0601454), Feb 27, 2006: LINE. CRACKED. CREW REPORTED ON CLIMBOUT THROUGH FL 280, AIRCRAFT YAWED, NR 1 ENGINE SHUT DOWN. ATTEMPT TO RESTART UNSUCCESSFUL. DUMPED FUEL AND RETURNED TO PIK. FOUND SENSE L - [SDR WRNA200600005](https://openairdocs.org/sdr/WRNA200600005), Feb 26, 2006: FILTER. UNKNOWN. WHEN LEVELING FL 380, MACH SPD .84, WHILE SLOWLY REDUCING POWER, NR 1 ENGINE AUDIBLY COMPRESSOR STALLED, EPR FLUX ALONG WITH INCREASE IN EGT, AMBER/HIGH EGT LIG - [SDR KCSA06006](https://openairdocs.org/sdr/KCSA06006), Feb 1, 2006: BATTERY PACK. INOPERATIVE. EXT SLIDE EMERGENCY LIGHT INOP. REMOVED AND REPLACED BATTERY PACK MODULE IAW MM 20-51-00. OPS CHECK GOOD IAW MM 33-51-00. - [SDR 0600246623](https://openairdocs.org/sdr/0600246623), Jan 25, 2006: LIGHT. INOPERATIVE. DURING LINE CHECK, FOUND DOOR 1L MOUNTED EMERGENCY LIGHT INOP. REPLACED DOOR MOUNTED LIGHT ASSEMBLY. OPERATIONAL CHECK GOOD. A/C RETURNED TO SERVICE. DUPLICATED - [SDR WRNA20050029](https://openairdocs.org/sdr/WRNA20050029), Dec 10, 2005: ENGINE. MALFUNCTIONED. CLIMBING OUT THRU 16K FT, NR 2 ENGINE SHUTTERED, ACCOMPANIED BY LOUD NOISE. HIGH EGT, EPR AND OIL PRESSURE, TEMP ALL WITHIN LIMITS. SHUT DOWN NR 2 ENGINE. AIRCR - [SDR P5CA0501409](https://openairdocs.org/sdr/P5CA0501409), Oct 31, 2005: STARTER. FAILED. AFTER PUSH BACK, CREW REPORTED NR 3 ENGINE WOULD NOT START. PARAMETERS INDICATE NORMAL, NR N1 OR N2 INDICATION. REPLACED STARTER IAW MM 80-10-00. OPS NORMAL. - [SDR UPS05444898](https://openairdocs.org/sdr/UPS05444898), Jul 14, 2005: ENGINE. FAILED. NR 3 ENGINE FAILED. REPLACED NR 3 ENGINE IAW TASK CARD 5000, 5016. OPS CHECK GOOD. - [SDR 05052](https://openairdocs.org/sdr/05052), Jul 3, 2005: ENGINE. FIRE. AFTER INITIATING CLIMB THRUST AT 1,000 FT, NR 3 ENGINE FIRE LIGHT ILLUMINATED WITH ACCOMPANYING FIRE WARNING BELL AND BOTH MASTER WARNING LIGHTS. ENGINE FIRE CH - [SDR WRNA200500016](https://openairdocs.org/sdr/WRNA200500016), Jun 21, 2005: ENGINE. DAMAGED. VERY LOUD RUMBLE ON TAKE OFF. UPON LANDING, NR 2 ENGINE WAS FOUND TO HAVE COILS MISSING FROM LT SIDE. RT SIDE DAMAGED, ALONG WITH VARIOUS OTHER AREAS OF DAMAGE - [SDR WRNA200500013](https://openairdocs.org/sdr/WRNA200500013), May 21, 2005: ENGINE. DAMAGED. NR1 ENGINE COMPRESSOR STALLED AT FL 11.5, AIRCRAFT RETURNED. LANDING NORMAL. ENGINE BOROSCOPE COMPLIED WITH, NO DISCREPANCIES NOTED. NR 1 ENGINE FAN CASING ACOU - [SDR P5CAO501327](https://openairdocs.org/sdr/P5CAO501327), Mar 3, 2005: FUEL CONTROL. MALFUNCTIONED. CREW REPORTED NR 4 ENGINE WOULD NOT MAKE TAKEOFF POWER. ENGINE COULD ONLY MAKE 1.24 EPR. REPLACED FUEL CONTROL. PERFORMED TRIM RUN, ALL NORMAL PER 73-21-01 AND - [SDR PCAO501328](https://openairdocs.org/sdr/PCAO501328), Mar 3, 2005: PUMP. MALFUNCTIONED. CREW REPORTED NR 4 ENGINE WOULD NOT MAKE TAKEOFF POWER. ENGINE COULD ONLY MAKE 1.24 EPR. REPLACED FUEL PUMP. PERFORMED TRIM RUN, ALL NORMAL PER 73-21-01 AND 73- - [SDR 0500196729](https://openairdocs.org/sdr/0500196729), Feb 14, 2005: ENGINE. OVERHEATED. SHORTLY AFTER TAKEOFF, THE NR 4 ENGINE NACELLE TEMPERATURE BEGAN TO INCREASE FOLLOWED BY THE FIRE WARNING ANNUNCIATION. THE CREW FOLLOWED COM PROCEDURES AND WHE - [SDR P5CA0501305](https://openairdocs.org/sdr/P5CA0501305), Jan 20, 2005: LINE. CHAFED. NR 3 ENG OIL PRESS FLUCTUATES FROM 35 TO 45 PSI. ENG OIL PRESS LIGHT BLINKS ON & OFF. ALSO OIL QTY WENT FROM 3/4 TO 1/4 AND BACK TO 1/2. FOUND UPPER ENGINE OIL All 258: https://openairdocs.org/engine/pratt-whitney-jt9d-7q/reports.md ## STCs that may be installed (OpenAirDocs) (6) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SE2338SO](https://openairdocs.org/stc/SE2338SO): Installation of an oil tank safety cap adapter which prevents oil loss in the event of loss or damage to the filler cap. Jet Avion Corporation - [STC SE00024EN](https://openairdocs.org/stc/SE00024EN): Installation of oil tank filler neck check valve. Helicopter Support Inc Services Div - [STC SE497NE](https://openairdocs.org/stc/SE497NE): Installation of oil tank filler neck check valve assembly. Aviation Components Support - [STC SE00047AT-D](https://openairdocs.org/stc/SE00047AT-D): Modification of turbine exhaust case to provide increased wall thickness for the purpose of improved blade containment. Aero Component Technologies - [STC SE00045AT-D](https://openairdocs.org/stc/SE00045AT-D): Modify -59A LPT case to reduce the thickness of four bosses to eliminate interference with the turbine case cooling manifold installed on -7Q engines. This modification permits use of the -59A LPT case on-7Q engines. Aero Component Technologies - [STC SE435NE](https://openairdocs.org/stc/SE435NE): Installation of an oil tank filler opening shuttle valve. Stockbridge William D ## PMA parts (OpenAirDocs) (971, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [WF335297](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132393134320250602133021.0001): Filter Element, Oil. Donaldson Company Inc · PMA PQ2432CE · Replaces 815189, Alternate: AD-B863F-65Y4 · May 23, 2025 - [739951KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153223182920251125233836.0001): Nut Option. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces 739951 · Feb 20, 2024 - [623V100-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149540485520240306163131.0001): Bleed Valve. Goodrich Corporation · PMA PQ1352NM · Replaces 728244 · Apr 7, 2023 - [941V0500](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142722605820240306163131.0001): Air Shut Off Valve. Goodrich Corporation · PMA PQ1352NM · Replaces 796641 · Apr 7, 2023 - [623V100-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120575539320231218190434.0001): Bleed Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 728244 · Apr 7, 2023 - [941V0500](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID109278233520231218190433.0001): Air Shut Off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 796641 · Apr 7, 2023 - [684V800](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188649902420230914183251.0001): Thermostat Flow Control. Honeywell International Inc. · PMA PQ1222NM · Replaces 756796 Rev. B (8-22-90) · Mar 29, 2023 - [426V600](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183757188420230914183253.0001): Solenoid Bleed Override Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 655005 Rev. C (8-23-90) · Mar 29, 2023 - [666V100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181891677520230914183252.0001): Fuel Check Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 706354 Rev. C (8-6-90) · Mar 29, 2023 - [941V100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162411062720230914183248.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 773627 Rev. C (4-12-84) · Mar 29, 2023 - [941V200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138315515420230914183245.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 5001987-01 Rev. D (8/20/90) · Mar 29, 2023 - [938V200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116261878520230914183246.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 781281 Rev. A (8/16/90) · Mar 29, 2023 - [787V300](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179052864220240223164806.0001): Shut-Off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 746357 Rev. A 2-8-74 · Mar 23, 2023 - [938V500](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147945906320240223164806.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 5005207-01 Rev. A 5-28-81 · Mar 23, 2023 - [938V100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126038311620240223164806.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 774322 Rev. C 11-16-78 · Mar 23, 2023 - [ST1146-08JP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197745574220230130224044.0001): Gasket. Jet Parts Engineering Inc · PMA PQ1739CE · Replaces ST1146-08 · Nov 15, 2022 - [DEC01- 056-533](https://drs.faa.gov/browse/excelExternalWindow/E52CBA5DDCD311F186258629005AC28B.0001): Gasket - .093 Free Height. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces ST1111-33 ST1121-33 ST1141-33 · Nov 16, 2020 - [KTST2785-10](https://drs.faa.gov/browse/excelExternalWindow/D1888A7BD9FBDAFD86258622005947A2.0001): Nut, Self Locking. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces Pratt & Whitney P/N ST2785-10 · Nov 3, 2020 - [M770354](https://drs.faa.gov/browse/excelExternalWindow/5BFC3294592D814B862585E4003A0124.0001): Spacer-#1&2 Bearing. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces Pratt & Whitney P/N 770354 · Sep 9, 2020 - [RDST1428-04](https://drs.faa.gov/browse/excelExternalWindow/D0DC4B29990D117D862585E4003A1EF8.0001): Clamp, Loop. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces Pratt & Whitney P/N ST1428-04 · Sep 8, 2020 - [M5005438-01](https://drs.faa.gov/browse/excelExternalWindow/9BE41C959A160DC2862585E4003A1D51.0001): Stop- Instrumentation Plug. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces Pratt & Whitney P/N 5005438-01 · Sep 8, 2020 - [44ASP290A](https://drs.faa.gov/browse/excelExternalWindow/7FB2193B6C55D03A862585D20064276A.0001): Switch Assembly. AeroSpares MCO · PMA PQ04350CE · Replaces 815386 801941 788012 795111 · Jul 23, 2020 - [44ASP290](https://drs.faa.gov/browse/excelExternalWindow/0A4B0D1F038BAFFE862585D200642719.0001): Switch Assembly. AeroSpares MCO · PMA PQ04350CE · Replaces 801941 788012 795111 · Jul 23, 2020 - [K29109-5-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199222314220240703182956.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638834 · Apr 1, 2020 - [MK50476-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID196841897320240703183001.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 641834 · Apr 1, 2020 - [H29117-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194053167920240703183012.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 662141 · Apr 1, 2020 - [H29118-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192129229120240703182937.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618097 · Apr 1, 2020 - [K29110-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191799248720240703182941.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618106 · Apr 1, 2020 - [H50361-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189842981620240703183046.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 760552 · Apr 1, 2020 - [F5231-4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188658819220240703182924.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 501558 · Apr 1, 2020 - [K1000X4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188589440020240703183043.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 753965 · Apr 1, 2020 - [F39244-3BC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183518510320240703183036.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 746922 · Apr 1, 2020 - [K3031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182584152620240703183020.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 707838 · Apr 1, 2020 - [H29605-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178996417420240703183009.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 649734 · Apr 1, 2020 - [K39369-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178897652920240703183039.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 751935 · Apr 1, 2020 - [F5031-3BCPW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174223066620240703183026.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 714847 · Apr 1, 2020 - [F50030-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174206753420240703183035.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 744380 · Apr 1, 2020 - [CN39971-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173827076120240703183014.0001): Nut, gangchannel,S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 677824 · Apr 1, 2020 - [MF39839-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID172863478620240703183032.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 743080 · Apr 1, 2020 - [K29109-4-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171047886120240703182951.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638671 · Apr 1, 2020 - [MK1031-4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169137431020240703183037.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 750691 · Apr 1, 2020 - [MF29748-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168182111020240703182934.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 596295 · Apr 1, 2020 - [K39085-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165068875520240703183012.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 650410 · Apr 1, 2020 - [CN52502-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162355773120240703183050.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 800826 · Apr 1, 2020 - [MK1031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152243115020240703183022.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 707842 · Apr 1, 2020 - [H29112-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151789073520240703182938.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618103 · Apr 1, 2020 - [F29964-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149905483120240703182948.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 637285 · Apr 1, 2020 - [H29819-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149068996020240703182944.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 624998 · Apr 1, 2020 - [K29110-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147186387620240703182942.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618106 · Apr 1, 2020 - [MF29122-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145687999320240703182955.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638676 · Apr 1, 2020 All of them: https://openairdocs.org/engine/pratt-whitney-jt9d-7q/pma.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.