# Service difficulty reports: Pratt & Whitney JT9D-7R4D

A list on [Pratt & Whitney JT9D-7R4D](https://openairdocs.org/engine/pratt-whitney-jt9d-7r4d.md).

Newest first. General aviation reporting is voluntary.

Page 1 of 21 · 1,030 reports

- [SDR ABXA20260618267](https://openairdocs.org/sdr/ABXA20260618267.md): Engine · hot start · Jun 18, 2026 · N651GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 SECONDS. STARTED ENGINE WITH A MAX EGT OF 381. AIRCRAFT OK FOR SERVICE.
- [SDR ABXA20260429181](https://openairdocs.org/sdr/ABXA20260429181.md): Engine · vibration · Apr 29, 2026 · N651GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 BLOCKS (BTB). AIRCRAFT FREIGHT LOAD IS LIGHT AT 15,500. PERFORMED ENGINE IDLE RUN AND BREAK AWAY POWER RU
- [SDR ABXA20260312112](https://openairdocs.org/sdr/ABXA20260312112.md): Bleed Valve · warning message · Mar 12, 2026 · N651GT · Boeing 767231 · Compressor Bleed Valve
  > 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. JUST AS WE STARTED DESCENDING TO FL240 WE GOT A CABIN ALTITUDE WARNING MESSAGE WHICH FORCED US TO EX
- [SDR ABXA20251215343](https://openairdocs.org/sdr/ABXA20251215343.md): Pressure Switch · defective · Dec 15, 2025 · N650GT · Boeing 767231 · Engine Oil Pressure
  > ON TAXI OUT, LT ENGINE OIL FILTER STATUS MESSAGE ILLUMINATED. AIRCRAFT RETURNED TO BLOCKS (BTB). MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE DIFFERENTIAL PRESS OIL SWITCH IAW AMM 79-35-01. OPS AND LEAK CHECKED GOOD. ACCOMPLISHED IDLE RUN OF NR 1 ENGINE I
- [SDR ABXA20251113298](https://openairdocs.org/sdr/ABXA20251113298.md): Engine · hot start · Nov 13, 2025 · N651GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 PERFORMED A SECOND TIME R ENG START. EGT READING 279 REF FIM 71-08 TASK 816. NO FURTHER MX ACTION
- [SDR ABXA20251024277](https://openairdocs.org/sdr/ABXA20251024277.md): Sensor · malfunctioned · Oct 24, 2025 · N650GT · Boeing 767231 · Engine Indicating System
  > 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 SURGED ALSO. INTERMITTENT SURGE FOR REMAINING FLIGHT. DIVERTED TO CVG AND LANDED.MTX GROUNDED AC AN
- [SDR ABXA20250907220](https://openairdocs.org/sdr/ABXA20250907220.md): Sensor · defective · Sep 7, 2025 · N650GT · Boeing 767231 · Fuel Controlling System
  > 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. REACTIVATED EEC'S PER MEL 73-21-1-1B. REMOVED OLD, THEN INSTALLED NEW L ENGINE TT2 FUEL CONTROL SENS
- [SDR ABXA20250704141](https://openairdocs.org/sdr/ABXA20250704141.md): Engine · warning light · Jul 4, 2025 · N651GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 FIM TASK 71-08 FAULT TREE 816. AND MTX RETURNED AC TO SERVICE.
- [SDR ABXA20250606122](https://openairdocs.org/sdr/ABXA20250606122.md): Engine · hot start · Jun 6, 2025 · N650GT · Boeing 767381 · Engine (Turbine/Turboprop)
  > 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 SUCCESSFUL. EGT PEAK 476.MTX RETURNED AC TO SERVICE.
- [SDR ABXA20250508091](https://openairdocs.org/sdr/ABXA20250508091.md): Engine · hot start · May 8, 2025 · N651GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 FIM 71-08 FT 816. RESTARTED #2 ENGINE. MAX EGT DURING ENGINE START WAS 355 DEGREES AUTH NUMBER 202
- [SDR ABXA20250424085](https://openairdocs.org/sdr/ABXA20250424085.md): Engine · overtemp · Apr 24, 2025 · N650GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 COOL. RESTARTED LT ENGINE, MAX EGT DURING START WAS 399 DEGREES. AIRCRAFT RELEASED FOR SERVICE.
- [SDR ABXA20241212254](https://openairdocs.org/sdr/ABXA20241212254.md): Probe · malfunctioned · Dec 12, 2024 · N651GT · Boeing 767231 · Engine Indicating System
  > 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, AMENDED REORT WILL BE SENT WHEN WORK IS COMPLETED. REMOVED AND REPLACED EEC PT2/TT2 PROBE IAW AMM 73-21-
- [SDR ABXA2024128247](https://openairdocs.org/sdr/ABXA2024128247.md): Engine · overtemp · Dec 8, 2024 · N650GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 TROUBLE SHOT IAW B767 FIM 71-05 FAULT TREE 801 AND FIM 71-08 FAULT TREE 816. ENG EXC PG ON EICAS SHOWE
- [SDR ABXA20240802147](https://openairdocs.org/sdr/ABXA20240802147.md): Controller · malfunctioned · Aug 2, 2024 · N651GT · Boeing 767231 · Fuel Controlling System
  > 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 SECURED R ENG @ 680 EGT.CREW DECARED EMERGENCY, SHUT DOWN RH ENGINE AND DIVERTED TO JFK AIRPORT A
- [SDR ABXA20240731146](https://openairdocs.org/sdr/ABXA20240731146.md): Sensor · malfunctioned · Jul 31, 2024 · N650GT · Boeing 767231 · Engine Indicating System
  > 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. ENG SHUTDOWN & CREW DECLARED AN EMERGENCY & DIVERTED TO DFW. AFTER LANDING MTX GROUNDED ACFT. PERF
- [SDR ABXA2024052196](https://openairdocs.org/sdr/ABXA2024052196.md): Fuel Control · faulted · May 21, 2024 · N650GT · Boeing 767231 · Fuel Control/Turbine Engines
  > 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 L ENGINE FUEL CONTROL FAULTY, REMOVED NAMED PART PER AMM 73-21-01. DETERMINED FROM FLIGHT DATA A
- [SDR ABXA2024042383](https://openairdocs.org/sdr/ABXA2024042383.md): Unknown · vibration · Apr 23, 2024 · N651GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > DURING TAXI WHILE STARTING #2 ENGINE RIGHT ENGINE HAD SIGNIFICANT VIBRATION AFTER ENGINE START,ENGINE INSTERMENTS WERE NORMAL. AC RETURNED TO GATE AND MAINTENANCE GROUNDED AC.PERFORMED VISUAL INSPECTION OF FAN BLADES, CORE COMPONENTS VBV/VSV, GEARBOX, ALL
- [SDR ABXA2024031157](https://openairdocs.org/sdr/ABXA2024031157.md): Igniter · faulted · Mar 11, 2024 · N651GT · Boeing 767231 · Magneto/Distributor
  > 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 74-00-1B. AC WAS RETURED TO SERVICE AND DEPARTED.
- [SDR ABXA20221017115](https://openairdocs.org/sdr/ABXA20221017115.md): None · none · Oct 17, 2022 · N650GT · Boeing 767 · Powerplant System
  > 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 ON FIRST ATTEMPT W/ BOTH IGNITORS SELECTED. AIRCRAFT RETURNED TO SERVICE.
- [SDR ABXA2022090286](https://openairdocs.org/sdr/ABXA2022090286.md): Warning Message · illuminated · Aug 30, 2022 · N650GT · Boeing 767231 · Turbine Section
  > EGT EXCEEDANCE 538 ON RIGHT ENGINE DURING START. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE INSPECTED ENGINE AND TURBINE AREA. NO DEFECTS NOTED IAW B767 AMM 72-51-01. AIRCRAFT RETURNED TO SERVICE.
- [SDR ABXA2022041141](https://openairdocs.org/sdr/ABXA2022041141.md): None · none · Apr 11, 2022 · N650GT · Boeing 767 · Powerplant System
  > 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. PERFORMED #2 ENG START WITH FLT CREW IAW AMM 71-00-00. SECOND ENG START WITHIN LIMITS. AIRCRAFT RET
- [SDR ABXA20211012101](https://openairdocs.org/sdr/ABXA20211012101.md): None · none · Oct 12, 2021 · N650GT · Boeing 767231 · Engine Starting System
  > 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 MINTENANCE. MAINTENANCE FOUND START CONTROL VALVE WAS FAULTY. START CONTROL VALVE WAS DEFERRED IAW ABX MEL
- [SDR UIEA2021031800611](https://openairdocs.org/sdr/UIEA2021031800611.md): Blade · damaged · Mar 15, 2021 · N651GT · Boeing 767231 · Turbine Engine Compressor Section
  > 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. SEE LOG PAGE 1329001 FOR OPS CHECK. TEST NO.11 VIBRATION SURVEY ACCOMPLISHED PER AMM 71-00-00. NIL DEFECTS NO
- [SDR 2DYA202010105001](https://openairdocs.org/sdr/2DYA202010105001.md): Power Lever · stuck · Jan 6, 2021 · N602KW · Boeing 767238 · Power Lever
  > 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 PRIOR TO THAT + OR MINUS 30 DEGREES. WE WILL FILE A SUPPLEMENTAL REPORT WHEN MORE INFORMATION IS
- [SDR 2DYA202010106001](https://openairdocs.org/sdr/2DYA202010106001.md): Idg · underserviced · Jan 5, 2021 · N602KW · Boeing 767238 · AC Generator-Alternator
  > 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 AND DECIDED TO RETURN FIELD (JFK). MOC CALLED JFK MX AND THEY WILL MEET THE AIRCRAFT UPON LANDING.
- [SDR 2DYA2020082005](https://openairdocs.org/sdr/2DYA2020082005.md): Engine · overtemp · Aug 25, 2020 · N602KW · Boeing 767238 · Engine (Turbine/Turboprop)
  > 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 THE ELECTRICAL LOAD. N1, N2, AND N3 WAS REDUCED WITH COMMAND THROTTLE REDUCED AND EGT BEGAN TO RIS
- [SDR UIEA2019042403945](https://openairdocs.org/sdr/UIEA2019042403945.md): Tube · cracked · Apr 22, 2019 · N650GT · Boeing 767231 · Turbine Section
  > #2 ENGINE TURBINE SECTION COOLING TUBE, 8:00 POSITION HAS A 1 IN CRACK AT PREVIOUS WELD. (<P>REMOVED AND REPLACED #2 ENGINE TURBINE SECTION COOLING TUBE IAW B767 AMM 75-24-08.</P>)
- [SDR UIEA2018083001849](https://openairdocs.org/sdr/UIEA2018083001849.md): Engine · malfunctioned · Aug 28, 2018 · N653GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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 71-00-00. LEAK CK AND OPS CKS GOOD.
- [SDR UIEA2017122502434](https://openairdocs.org/sdr/UIEA2017122502434.md): Engine · odor · Dec 22, 2017 · N653GT · Boeing 767231 · Engine (Turbine/Turboprop)
  > 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.md): Blade · nicked · Nov 16, 2017 · N650GT · Boeing 767231 · Turbine Engine Air Inlet Section
  > 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 FPI IAW MM 70-11-06, OK FOR SERVICE.
- [SDR 2DYA20160830005](https://openairdocs.org/sdr/2DYA20160830005.md): Engine · power loss · Aug 21, 2016 · N767DA · Boeing 767246 · Engine (Turbine/Turboprop)
  > 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. AND TURBULENCE, UNABLE TO HOLD FL390 ALTITUDE AND DECLARED EMERGENCY OF COMING OUT OF ALTITUDE ON 12
- [SDR UIEA2016062700507](https://openairdocs.org/sdr/UIEA2016062700507.md): Wire Harness · contaminated · Jun 27, 2016 · N648GT · Boeing 76733AER · Turbine Engine System Wiring
  > NR 2 ENGINE FAN AREA ELECTRICAL HARNESS DIRTY WITH OIL. CLEANED IAW AMM 72-00-00.
- [SDR UIEA2016062700492](https://openairdocs.org/sdr/UIEA2016062700492.md): Lock · corroded · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Thrust Reverser
  > 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.md): Protector · peeling · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Cowling System
  > 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 PASTE IAW CMM 71-13-22.
- [SDR UIEA2016062700494](https://openairdocs.org/sdr/UIEA2016062700494.md): Duct · dented · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Cowling System
  > 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.md): Cowling · chafed · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Cowling System
  > 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.md): Cowling · damaged · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Cowling System
  > ENGINE NR 2 LT CORE COWL SUPPORT ROD DAMAGED. LT CORE COWL REPLACED.
- [SDR UIEA2016062700497](https://openairdocs.org/sdr/UIEA2016062700497.md): Bracket · damaged · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Cowling System
  > 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.md): Plug · corroded · Jun 27, 2016 · N648GT · Boeing 76733AER · Ignition System
  > 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.md): Seal · torn · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine (Turbine/Turboprop)
  > 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.md): Screw · corroded · Jun 27, 2016 · N648GT · Boeing 76733AER · Ignition System
  > 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 SWPM 20-60-01.
- [SDR UIEA2016062700476](https://openairdocs.org/sdr/UIEA2016062700476.md): Cable · loose · Jun 27, 2016 · N648GT · Boeing 76733AER · Cylinder Head Temperature (CHT) Indicating System
  > 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, UPPER, ENGINE PN CF6-80C2, S/N 704860.
- [SDR UIEA2016062700479](https://openairdocs.org/sdr/UIEA2016062700479.md): Latch · bent · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Thrust Reverser
  > NR1 ENGINE UPPER LATCH HUG GUARD BEND. LATCH REPLACED IAW AMM 78-31-01.
- [SDR UIEA2016062700481](https://openairdocs.org/sdr/UIEA2016062700481.md): Latch · loose · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Thrust Reverser
  > NR 2 ENGINE UPPER LATCH LOOSE. LATCH REPLACED IAW 78-31-01.
- [SDR UIEA2016062700482](https://openairdocs.org/sdr/UIEA2016062700482.md): Sensor · faulty · Jun 27, 2016 · N648GT · Boeing 76733AER · Cabin Cooling System
  > 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.md): Latch · bent · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Thrust Reverser
  > ENGINE NR 2 RT C-DUCT LATCH HUG GUARD BEND. LATCH REPLACED IAW AMM 78-31-01.
- [SDR UIEA2016062700488](https://openairdocs.org/sdr/UIEA2016062700488.md): Bushing · worn · Jun 27, 2016 · N648GT · Boeing 76733AER · Engine Thrust Reverser
  > 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.md): Seal · leaking · Dec 8, 2015 · N673BF · Boeing 767238 · Turbine Engine Oil System
  > 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 ON THE ACCESSORY GEAR BOX. A GVI OF THE SEAL WAS COMPLIED WITH PRIOR TO THE PUMP INSTALLATION THE
- [SDR 2DYA20141030001](https://openairdocs.org/sdr/2DYA20141030001.md): Eec · malfunctioned · Oct 24, 2014 · N767DA · Boeing 767246 · Fuel Control/Turbine Engines
  > 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 FUEL FLOW TRANSMITTER IAW 73-31-01 & TESTED IAW AMM 71-00-00 TEST NR 3. OK FOR SERVICE. NO FURTH
- [SDR XV6A2014072700004](https://openairdocs.org/sdr/XV6A2014072700004.md): Engine · fluctuates · Jul 27, 2014 · N769VA · Boeing 767222 · Powerplant System
  > 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 FLOW 4.6 TO 6.4 & 37,000 FT PRESS ALT. AT 3,000 FT LEVEL FLIGHT 250KTS N1 ON BOTH ENGS AT 61% LT ENG

Next page: https://openairdocs.org/engine/pratt-whitney-jt9d-7r4d/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
WHERE engine_model_key = 'JT9D7R4D'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/pratt-whitney-jt9d-7r4d/reports

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