# Pratt & Whitney JT9D-7R4D - Type: Engine model (FAA registry) - Registry code: 51553 - Manufacturer (registry): P & W - Model: JT9D-7R4D - Engine type: Turbo-fan - Power: 48,000 lb thrust - Data sheet: [TCDS E3NE](https://openairdocs.org/tcds/E3NE) (OpenAirDocs) - Holder: Pratt & Whitney - Installed in: 4 registered aircraft - Page: https://openairdocs.org/engine/pratt-whitney-jt9d-7r4d 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 2007-18-06](https://openairdocs.org/ad/2007-18-06): Inspection of the blade root thickness · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Oct 5, 2007 - [AD 2004-01-08](https://openairdocs.org/ad/2004-01-08): One-piece fan case shield · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Feb 10, 2004 - [AD 2002-07-04](https://openairdocs.org/ad/2002-07-04): Low Pressure Turbine (LPT) 5th Stage Disks · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective May 14, 2002 - [AD 2001-17-30](https://openairdocs.org/ad/2001-17-30): High Pressure Turbine 1st Stage Disk Aft Lugs · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Oct 4, 2001 - [AD 2001-04-11](https://openairdocs.org/ad/2001-04-11): High Pressure Turbine (HPT) Disks · Pratt & Whitney Division JT9D-20, JT9D-7, JT9D-7A and 7 more. Effective May 7, 2001 - [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 99-20-04](https://openairdocs.org/ad/99-20-04): High Pressure Turbine Disks · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Oct 29, 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 96-17-11](https://openairdocs.org/ad/96-17-11): Low pressure turbine (LPT) vane · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Nov 18, 1996 - [AD 94-08-06](https://openairdocs.org/ad/94-08-06): Fan Blade · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Jul 5, 1994 - [AD 91-03-03](https://openairdocs.org/ad/91-03-03): High Pressure Compressor Turbine Driveshaft · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Feb 22, 1991 - [AD 90-23-19](https://openairdocs.org/ad/90-23-19): Air Seal · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 13 more. Effective Nov 23, 1990 - [AD 90-14-08](https://openairdocs.org/ad/90-14-08): High Pressure Compressor · Pratt & Whitney Division JT9D-7R4D and JT9D-7R4E. Effective Jul 2, 1990 - [AD 87-23-05 R1](https://openairdocs.org/ad/87-23-05-R1): Fan Case Assembly · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Mar 23, 1990 - [AD 86-25-51](https://openairdocs.org/ad/86-25-51): Low Altitude Surges · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 3 more. Effective Mar 20, 1987 - [AD 86-23-03](https://openairdocs.org/ad/86-23-03): Second Stage High Pressure Turbine Rotor (HPTR) Airseal · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 1 more. Effective Dec 8, 1986 - [AD 86-03-03](https://openairdocs.org/ad/86-03-03): Fuel Nozzle Flow And Spray Cone Angle · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4E and JT9D-7R4E4. Effective Mar 14, 1986 - [AD 83-22-52 R1](https://openairdocs.org/ad/83-22-52-R1): Refurbishing Fuel Nozzles · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Feb 21, 1984 - [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 2005-26-09](https://openairdocs.org/ad/2005-26-09) (historical): 1st stage fan blades. · Pratt & Whitney Division JT9D-7R4D, JT9D-7R4D1, JT9D-7R4E and 4 more. Effective Jan 11, 2006 - [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 ## Registered aircraft (4) - [N267JR](https://openairdocs.org/aircraft/N267JR): [Knight Sky II LLC](https://openairdocs.org/faa-owner/KNIGHT%20SKY%20II%20LLC), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami), built 1986, S/N 23402 - [N603KW](https://openairdocs.org/aircraft/N603KW): [Alta 767 Spv LLC](https://openairdocs.org/faa-owner/ALTA%20767%20SPV%20LLC), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 1985, S/N 23213 - [N604KW](https://openairdocs.org/aircraft/N604KW): [Alta 767 Spv LLC](https://openairdocs.org/faa-owner/ALTA%20767%20SPV%20LLC), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 1988, S/N 24145 - [N783CK](https://openairdocs.org/aircraft/N783CK): [Kalitta Air LLC](https://openairdocs.org/faa-owner/KALITTA%20AIR%20LLC), [Ypsilanti, MI](https://openairdocs.org/faa-place/MI/Ypsilanti), built 1990, S/N 24782 ## NTSB investigations (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB NYC94LA111](https://openairdocs.org/ntsb/NYC94LA111), Jun 29, 1994: Boeing 767-200 (N606TW), East Hampton, NY, no damage. Probable cause: IN-FLIGHT ENCOUNTER WITH TURBULENCE IN THE VICINITY OF THUNDERSTORMS. A FACTOR RELATED TO THE ACCIDENT WAS: IMPROPER PLANNING/DECISION BY THE PILOT(S). ## FAA accident and incident reports (4) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 19940629028449I](https://openairdocs.org/incident/19940629028449I), Jun 29, 1994: Boeing 767231 (N606TW), New York, NY. Encountered severe turbulence holding in weather near thunderstorms. Beltsign on. Attendant not seated broke both leg - [Incident 19900512021099I](https://openairdocs.org/incident/19900512021099I), May 12, 1990: Boeing 767231 (N606TW), St Louis, MO. Left engine oil temperature high. Shut it down. Metal found in oil filter and chip detectors. - [Incident 19880212008589I](https://openairdocs.org/incident/19880212008589I), Feb 12, 1988: Boeing 767231 (N606TW), St Louis, MO. On rollout engine went to sub idle and e g t rose to the red band. Shut engine down. Malfunction was undetermined. - [Incident 19870715044889I](https://openairdocs.org/incident/19870715044889I), Jul 15, 1987: Boeing 767231 (N606TW), Kansas City, MO. Engine fire warning in climb, found faulty logic card in detector system. ## Service difficulty reports (1,030, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR ABXA20260618267](https://openairdocs.org/sdr/ABXA20260618267), Jun 18, 2026: ENGINE. HOT START. DURING TAXI, RT ENGINE HOT START-563 DEGREES FOR 6 SECONDS. RETURNED TO THE GATE (BTB). PER ABX AMM 71-00-00 & FIM 71-08 FAULT TREE 816 . MOTORED RT ENG FOR 30 - [SDR ABXA20260429181](https://openairdocs.org/sdr/ABXA20260429181), Apr 29, 2026: ENGINE. VIBRATION. VERY HEAVY VIBRATION FROM LEFT ENGINE DURING ENGINE START UP & TAXI. DID ENGINE RUN UP & IT GOT WORSE. NO BAD ENGINE INDICATIONS ON EICAS. A/C RETURNED TO BLOCK - [SDR ABXA20260312112](https://openairdocs.org/sdr/ABXA20260312112), Mar 12, 2026: BLEED VALVE. WARNING MESSAGE. R ENGINE BLEED VALVE CAUTION MSG ON THE CLIMB THROUGH 8000 FT .WE RAN THE QRH AND CONTINUED CRUISING AT FL380 SINCE THERE WAS NO LIMITING FACTOR TO THE FLIGHT. - [SDR ABXA20251215343](https://openairdocs.org/sdr/ABXA20251215343), Dec 15, 2025: PRESSURE SWITCH. DEFECTIVE. ON TAXI OUT, LT ENGINE OIL FILTER STATUS MESSAGE ILLUMINATED. AIRCRAFT RETURNED TO BLOCKS (BTB). MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE DIFFERENTIAL PRESS - [SDR ABXA20251113298](https://openairdocs.org/sdr/ABXA20251113298), Nov 13, 2025: ENGINE. HOT START. RT ENG ABORTED ENG START DURING TAXI OUT,BECAUSE OF HOT START. EXCEEDED LIMITS FOR 1 SEC. UP TO 539 DEGREES.A/C RETURNED TO GATE (BTB) AND MTX GROUNDED A/C. MTX - [SDR ABXA20251024277](https://openairdocs.org/sdr/ABXA20251024277), Oct 24, 2025: SENSOR. MALFUNCTIONED. FL320 L ENG STARTED SURGING, EPR +/- .55, N1 +/- 2.3, EGT +/- 20. FOLLOWED QRH, ENGINE STABILIZED IN "FLT" IGN. MODE- REMAIN MOSTLY STABLE. ANY TURB, R ENG SURG - [SDR ABXA20250907220](https://openairdocs.org/sdr/ABXA20250907220), Sep 7, 2025: SENSOR. DEFECTIVE. L ENG FLUCTUATE AT FL 360 EPR 1.31-1.27, N1 82.8-86.5, EGT 418-416. NO FLUCTUATION ON DESCENT OR APPROACH. DEFERRED THE EEC (PMC) SYSTEM PER MEL 73-21-1-1B. REA - [SDR ABXA20250704141](https://openairdocs.org/sdr/ABXA20250704141), Jul 4, 2025: ENGINE. WARNING LIGHT. ON #2 ENG START WHILE TAXING EGT EXCEEDANCE TO 562 AC RETURNED TO GATE (BTB) AND MTX GROUNDED AC. MTX PERFORMED #2 ENG. START ,EGT FOUND TO BE IN LIMITS. IAW FI - [SDR ABXA20250606122](https://openairdocs.org/sdr/ABXA20250606122), Jun 6, 2025: ENGINE. HOT START. RH HOT ENGINE START DURING TAXI OUT ,A/C RETURNED TO GATE(BTB) AND MTX GROUNDED A/C ,CREW MOTORED ENG TO LET COOL PER FIM 71-08 FAULT TREE 801. 2ND ENGINE START - [SDR ABXA20250508091](https://openairdocs.org/sdr/ABXA20250508091), May 8, 2025: ENGINE. HOT START. DURING TAXI, HOT START #2 ENG WITH EGT EXCEEDANCE AT 543 C. A/C RETURNED TO BLOCKS. (BTB). MAINTENANCE MOTORED #2 ENGINE AND LET IT COOL PER AMM 71-00-00 AND FI - [SDR ABXA20250424085](https://openairdocs.org/sdr/ABXA20250424085), Apr 24, 2025: ENGINE. OVERTEMP. ON TAXI OUT, DURING LEFT ENGINE START EGT REACHED 541 EGT. AIRCRAFT RETURNED TO BLOCKS (BTB). PER AMM 71-00-00 AND FIM 71-08 FT 816. MOTORED LT ENGINE AND LET C - [SDR ABXA20241212254](https://openairdocs.org/sdr/ABXA20241212254), Dec 12, 2024: PROBE. MALFUNCTIONED. RIGHT ENGINE SURGED DURING CLIMB, AC DECLARED EMERGENCY AND PERFORMED (ATB) AC RETURNED TO GATE AND MTX GROUNDED AC .AC IS CURENTLY BEING WORKED IN LAX , AMENDE - [SDR ABXA2024128247](https://openairdocs.org/sdr/ABXA2024128247), Dec 8, 2024: ENGINE. OVERTEMP. AT ENGINE START UP, RIGHT ENGINE OVERTEMP ON START UO - TEMP REACHED 545 DEG C. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE GROUNDED THE AIRCRAFT. MAINTENANCE TR - [SDR ABXA20240802147](https://openairdocs.org/sdr/ABXA20240802147), Aug 2, 2024: CONTROLLER. MALFUNCTIONED. DURING FLIGHT FROM BOS TO CVG TO FL380 AT LEVEL OFF R ENG PAC STALLED AND SURGED THE RIGHT ENG ROLLED BACK TO IDLES AS THIS BEGAN THE EGT STARTED INCREASING WE - [SDR ABXA20240731146](https://openairdocs.org/sdr/ABXA20240731146), Jul 31, 2024: SENSOR. MALFUNCTIONED. IN CRUISE AT FL350, LT ENG SURGING .3 N1 INCREASING TO .6 N1 FLUXUATION BY THE TIME OF SHUTDOWN IAW QRH. FLUXUATION REFLECTED IN EPR, FF, & OIL PRESS. PER QRH. - [SDR ABXA2024052196](https://openairdocs.org/sdr/ABXA2024052196), May 21, 2024: FUEL CONTROL. FAULTED. L ENG EPR, N1 EGT FLUCTUATED IN FLIGHT. SEE VIDEO SENT MECH/MTC AC RETURED TO FIELD AND GROUNDED BY MAINTENANCE DETERMINED FROM FLIGHT DATA AND NAMED VIDEO THE - [SDR ABXA2024042383](https://openairdocs.org/sdr/ABXA2024042383), Apr 23, 2024: UNKNOWN. VIBRATION. DURING TAXI WHILE STARTING #2 ENGINE RIGHT ENGINE HAD SIGNIFICANT VIBRATION AFTER ENGINE START ,ENGINE INSTERMENTS WERE NORMAL. AC RETURNED TO GATE AND MAINTENA - [SDR ABXA2024031157](https://openairdocs.org/sdr/ABXA2024031157), Mar 11, 2024: IGNITER. FAULTED. DURING TAXI STARTING RH ENGINE #1 INGNITOR LACKET TO START THE ENGINE AC RETURNED TO GATE AND MAINTENACE GROUNDED AC AND DEFERRED THE #1 IGNITION IAW MEL 74-00- - [SDR ABXA20221017115](https://openairdocs.org/sdr/ABXA20221017115), Oct 17, 2022: NONE. NONE. NO LIGHT OFF LEFT ENGINE WITH TWO ATTEMPTS. AIRCRAFT BACK TO BLOCK AND GROUNDED BT MAINTENANCE. MAINTENANCE STARTED L/H ENGINE IAW B767 AMM 71-00-00. LIGHT OFF - [SDR ABXA2022090286](https://openairdocs.org/sdr/ABXA2022090286), Aug 30, 2022: WARNING MESSAGE. ILLUMINATED. EGT EXCEEDANCE 538 ON RIGHT ENGINE DURING START. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE INSPECTED ENGINE AND TURBINE AREA. NO DEFECTS N - [SDR ABXA2022041141](https://openairdocs.org/sdr/ABXA2022041141), Apr 11, 2022: NONE. NONE. R/H ENGINE EGT EXCEEDANCE ON START 542 DEGREES FOR 3 SECONDS. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE T/S IAW FIM 71-08-00-990-816-P00. - [SDR ABXA20211012101](https://openairdocs.org/sdr/ABXA20211012101), Oct 12, 2021: NONE. NONE. RT. ENG. IGNITION START SELECTOR DOES NOT HOLD IN THE GND POSITION WHEN STARTING. NO VALVE LIGHT, NO N2 ROTATION. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MINTENA - [SDR UIEA2021031800611](https://openairdocs.org/sdr/UIEA2021031800611), Mar 15, 2021: BLADE. DAMAGED. FAN CASE DAMAGED AND BLADE ON LH ENGINE (REMOVED AND REPLACED #1 ENG 2EA ACOUSTIC PANELS PER AMM 72-33-05 & REPLACED BLADES 39 & 19 PER AMM 72-31-02. SE - [SDR 2DYA202010105001](https://openairdocs.org/sdr/2DYA202010105001), Jan 6, 2021: POWER LEVER. STUCK. AT FL39,000 DURING CRUISE, LEFT THRUST LEVER WAS NOT RESPONDING AND EPR WAS STUCK AT 1.00. HAD TO DECENT TO FL36000 TO MAINTAIN AIRSPEED. EGT WAS BEING ERRATIC - [SDR 2DYA202010106001](https://openairdocs.org/sdr/2DYA202010106001), Jan 5, 2021: IDG. UNDERSERVICED. RIGHT GEN DRIVE EICAS MESSAGE AFTER TAKE-OFF, DRIVE DISC LIGHT CAME ON. CREW CALLED DISPATCH REPORTING RT IDG DRIVE/GEN. OFF EICAS MESSAGE, CREW FOLLOWED FCOM A - [SDR 2DYA2020082005](https://openairdocs.org/sdr/2DYA2020082005), Aug 25, 2020: ENGINE. OVERTEMP. PASSENGER FLIGHT EN ROUTE FROM GEO TO JFK WAS AT TOP OF DECENT, AT FL380 TIME APPROXIMATE 0027Z. THE LT GENERATOR WENT OFF LINE AND THE APU GENERATOR PICKED UP - [SDR UIEA2019042403945](https://openairdocs.org/sdr/UIEA2019042403945), Apr 22, 2019: TUBE. CRACKED. #2 ENGINE TURBINE SECTION COOLING TUBE, 8:00 POSITION HAS A 1 IN CRACK AT PREVIOUS WELD. (

REMOVED AND REPLACED #2 ENGINE TURBINE SECTION COOLING TUBE IA - [SDR UIEA2018083001849](https://openairdocs.org/sdr/UIEA2018083001849), Aug 28, 2018: ENGINE. MALFUNCTIONED. AFTER TAKEOFF RED N2 EXCEEDANCE LT ENG AND NON-RESPONSIVE. THRUST LEVER WITH ENG SPEED STILL INCREASING. PRECAUTIONARY ENG SHUTDOWN. REPLACED LT ENGINE PER AMM - [SDR UIEA2017122502434](https://openairdocs.org/sdr/UIEA2017122502434), Dec 22, 2017: ENGINE. ODOR. STRONG BURNING ODOR FOR ABOUT 5 MINUTES, AT FL 400. REMOVED AND REPLACED THE NR 1 ENGINE IAW AMM 71-00-02, LEAK CHECKED AND ENGINE RUNS GOOD. - [SDR UIEA2017111702255](https://openairdocs.org/sdr/UIEA2017111702255), Nov 16, 2017: BLADE. NICKED. NR 1 & 40 BLADES FOUND NICKED. BLENDED WITHIN LIMITS IAW AMM 72-31-02. PERFORMED A DYE PENETRANT INSPECTION ON THE BLADES AT BLENDS. NO CRACKS FOUND, COMPLETED - [SDR 2DYA20160830005](https://openairdocs.org/sdr/2DYA20160830005), Aug 21, 2016: ENGINE. POWER LOSS. AN INFLIGHT EMERGENCY WAS REPORTED DUE TO A ENGINE ROLL BACK. APPARENT EVENT OF ICE CRYSTAL ICING. RT ENG INDICATIONS OF IDLE, ENG ANTI ICE WAS ON, IN PRECIP. A - [SDR UIEA2016062700507](https://openairdocs.org/sdr/UIEA2016062700507), Jun 27, 2016: WIRE HARNESS. CONTAMINATED. NR 2 ENGINE FAN AREA ELECTRICAL HARNESS DIRTY WITH OIL. CLEANED IAW AMM 72-00-00. - [SDR UIEA2016062700492](https://openairdocs.org/sdr/UIEA2016062700492), Jun 27, 2016: LOCK. CORRODED. ENGINE NR 1 CORROSION FOUND ON THE RT C-DUCT LOCK. CORROSION CLEANED AND TREATED ACCY TO AMM 51-05-03. - [SDR UIEA2016062700493](https://openairdocs.org/sdr/UIEA2016062700493), Jun 27, 2016: PROTECTOR. PEELING. ENGINE NR 2 RT FAN COWL-MID OTBD PART DIVISOR MATERIAL. CHECK FAN COWL FWD L/E FOUND EDGE PROTECTOR PEELING OFF, BONDED EDGE PROTECTOR USING EA 9394 ADHESIVE PA - [SDR UIEA2016062700494](https://openairdocs.org/sdr/UIEA2016062700494), Jun 27, 2016: DUCT. DENTED. NR 1 ENGINE DENT FOUND IN THE TOP SIDE OF THE LT C-DUCT RAIL. C-DUCT REPLACED, NRC M0150 REPLACEMENT. - [SDR UIEA2016062700495](https://openairdocs.org/sdr/UIEA2016062700495), Jun 27, 2016: COWLING. CHAFED. ENGINE NR 2 LT CORE COWL AFT BRACKET OF HOLD OPEN ROD CHAFING. ENGINE NR 2 REPLACE CORE COWL IAW AMM 71-11-06. - [SDR UIEA2016062700496](https://openairdocs.org/sdr/UIEA2016062700496), Jun 27, 2016: COWLING. DAMAGED. ENGINE NR 2 LT CORE COWL SUPPORT ROD DAMAGED. LT CORE COWL REPLACED. - [SDR UIEA2016062700497](https://openairdocs.org/sdr/UIEA2016062700497), Jun 27, 2016: BRACKET. DAMAGED. ENGINE NR 2 RT CORE COWL BRACKET. STOW PIN OF HOLD OPEN ROD DAMAGE BRACKET. ADAPTER REPLACED AMM 71-11-11. - [SDR UIEA2016062700498](https://openairdocs.org/sdr/UIEA2016062700498), Jun 27, 2016: PLUG. CORRODED. ENGINE NR 1, NR 2 PLUGS ON THE IGNITION BOX ARE CORRODED. ENGINE NR 1, NR 2 PLUGS ON THE IGNITION BOX WERE CLEANED OF CORROSION IAW SWPM 20-60-01. - [SDR UIEA2016062700503](https://openairdocs.org/sdr/UIEA2016062700503), Jun 27, 2016: SEAL. TORN. ENGINE NR 2 IN THE INTERMEDIATE CASE ON THE BLADE, SEAL IS TORN. PERFORMED SEALANT ON THE ENGINE NR 2 IN THE INTERMEDIATE CASE BLADES IAW AMM 51-31-00. - [SDR UIEA2016062700506](https://openairdocs.org/sdr/UIEA2016062700506), Jun 27, 2016: SCREW. CORRODED. ENGINE NR 2 ON THE UPPER IGNITION BOX, THE PLUGS SCREWS ARE CORRODED. ENGINE NR 2 ON THE UPPER IGNITION BOX THE PLUGS SCREWS WERE CLEANED FORM CORROSION IAW SWP - [SDR UIEA2016062700476](https://openairdocs.org/sdr/UIEA2016062700476), Jun 27, 2016: CABLE. LOOSE. NR 2 ENGINE LT AND RT SIDE 0300 AND 0900 O`CLOCK CORE AREA IN THE THERMOCOUPLE CABLE SLEEVE LOOSE CLOSE THE UNIT. THERMOCOUPLE CABLE REPLACED IAW 77-21-02, UPPE - [SDR UIEA2016062700479](https://openairdocs.org/sdr/UIEA2016062700479), Jun 27, 2016: LATCH. BENT. NR1 ENGINE UPPER LATCH HUG GUARD BEND. LATCH REPLACED IAW AMM 78-31-01. - [SDR UIEA2016062700481](https://openairdocs.org/sdr/UIEA2016062700481), Jun 27, 2016: LATCH. LOOSE. NR 2 ENGINE UPPER LATCH LOOSE. LATCH REPLACED IAW 78-31-01. - [SDR UIEA2016062700482](https://openairdocs.org/sdr/UIEA2016062700482), Jun 27, 2016: SENSOR. FAULTY. LEFT PACK COMPRESSOR OUTLET SENSOR, TS41, FOUND FAULTY, READS HIGH RESISTANCE. OUTLET SENSOR REPLACED IAW MM 21-51-06. - [SDR UIEA2016062700487](https://openairdocs.org/sdr/UIEA2016062700487), Jun 27, 2016: LATCH. BENT. ENGINE NR 2 RT C-DUCT LATCH HUG GUARD BEND. LATCH REPLACED IAW AMM 78-31-01. - [SDR UIEA2016062700488](https://openairdocs.org/sdr/UIEA2016062700488), Jun 27, 2016: BUSHING. WORN. ENGINE NR 1 RT C-DUCT, UPPER LATCH LOOSE. REPLACED KINK ASSY, REPLACED BUSHINGS. PINS THREADED AND SPACERS IAW AMM 78-31-01. - [SDR 2PSA2015121201](https://openairdocs.org/sdr/2PSA2015121201), Dec 8, 2015: SEAL. LEAKING. TAKEOFF & 0:30 CREW OBSERVED LT ENG OIL QTY DECREASING ABNORMALLY. ENG WAS SHUT DOWN & ACFT RETURNED. DISCOVERED A FAILED FACE SEAL AT THE FUEL PUMP DRIVE PAD O - [SDR 2DYA20141030001](https://openairdocs.org/sdr/2DYA20141030001), Oct 24, 2014: EEC. MALFUNCTIONED. LEFT ENG INDICATION EPR, NO RESPONSE TO THROTTLE MOVEMENT. FUEL FLOW INDICATION LOW N1 & N2 INDICATION NORMAL. PLACED EEC OPERATION ON MEL 77-11-01-01. CHECKED - [SDR XV6A2014072700004](https://openairdocs.org/sdr/XV6A2014072700004), Jul 27, 2014: ENGINE. FLUCTUATES. AFTER LEVELING AT CRUISE ALTITUDE, LT ENGINE WOULD FLUCTUATE RAPIDLY. WITH NT TURNED OFF FOLLOWING WAS OBSI EPR 1.3 - 1.4, N1 80% TO 90%, N2 84% TO 93%, FUEL FL All 1,030: https://openairdocs.org/engine/pratt-whitney-jt9d-7r4d/reports.md ## STCs that may be installed (OpenAirDocs) (2) 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 SE00054AT-D](https://openairdocs.org/stc/SE00054AT-D): Modification of the turbine exhaust case to provide increased wall thickness for the purpose of improved blade containment. 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) (over 1,000, 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 - [AA134S-1KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184879292020230503123547.0001): Igniter Plug. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces AA134S-1 · Apr 27, 2023 - [623V100-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149540485520240306163131.0001): Bleed Valve. Goodrich Corporation · PMA PQ1352NM · Replaces 728244 · 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 - [1011V0400](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115703959220230914150543.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 792396 · Apr 5, 2023 - [1011V0400-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111683462420230914150542.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 806273 Rev. Original (11-9-90) · Apr 5, 2023 - [1011V0400-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID108147711720230914150544.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 792396 · Apr 5, 2023 - [1011V0200-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194862638220230914183239.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 788775 Rev. B (10-13-82) · Mar 29, 2023 - [938V400](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189787864520230914183236.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 784015 Rev. D (8-17-90) · Mar 29, 2023 - [941V300](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189367665620230914183237.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 5004879-01 Rev. E (8-16-90) · Mar 29, 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 - [1011V0200-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182581454520230914183243.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 801479 Rev. A (8-21-90) · 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 - [449V450-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180455150620230914183250.0001): Linear Directional Control Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 729728 · Mar 29, 2023 - [1011V0400-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164641560420230914183241.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 801443 Rev. A (8-17-90) · 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 - [666V100-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129402277020230914183240.0001): Fuel Check Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 803669 Rev. Original (3-28-89) · 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 - [1011V0200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113104036020230914183238.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 788775 Rev. B (10-13-82) · Mar 29, 2023 - [815V400](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID105470455320230914183242.0001): Linear Directional Control Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 781204 Rev. D (8/21/90) · Mar 29, 2023 - [ST1946-163SD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157259267720220608164142.0001): Packing-Preformed. Seal Dynamics Inc · PMA PQ1715CE · Replaces ST1946-163 · Apr 28, 2022 - [10-614960-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID843352222920210921141218.0001): Stator- -EEC. Honeywell International Inc. Honeywell Aerospace · PMA PQ1222NM · Replaces 783643 · Apr 21, 2021 - [10-614965-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID739545970620210921141219.0001): Rotor-EEC. Honeywell International Inc. Honeywell Aerospace · PMA PQ1222NM · Replaces 781997 · Apr 21, 2021 - [10-614965-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID532863254720210921141546.0001): Rotor - EEC Generator. Honeywell International Inc. Honeywell Aerospace · PMA PQ1222NM · Replaces 781997 · Apr 21, 2021 - [10-614960-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100089221820210921141545.0001): Stator - EEC Generator. Honeywell International Inc. Honeywell Aerospace · PMA PQ1222NM · Replaces 783643 · Apr 21, 2021 - [DEC06- 003-501](https://drs.faa.gov/browse/excelExternalWindow/E2F24218F1DE901086258629005AC423.0001): Seal, Shaft, Stationary. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces 218304 · Nov 16, 2020 - [DEC01- 056-527](https://drs.faa.gov/browse/excelExternalWindow/54EE811A2D8363BE86258629005AC230.0001): Gasket - .093 Free Height. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces ST1111-27 ST1121-27 ST1141-27 · Nov 16, 2020 - [M5001518-01](https://drs.faa.gov/browse/excelExternalWindow/E63F78CEE74AAE3086258601005A4B50.0001): Shoulder Pin. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces Pratt & Whitney P/N 5001518-01 · Oct 7, 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 - [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 - [H49513-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199865578120240703183103.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces ST2119-10 · 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 - [K39255-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193201026820240703183043.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 753970 · 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 - [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 - [K52341-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186716157020240703183050.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 798643 · 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 - [H29220-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181296887920240703182959.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 639299 · Apr 1, 2020 - [H29011-6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179081188420240703183101.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces ST2117-12 · 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 - [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 - [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 - [MF49663-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168864943220240703183015.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 677828 · 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 All of them: https://openairdocs.org/engine/pratt-whitney-jt9d-7r4d/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.