# Service difficulty reports: Honeywell TFE731-20

A list on [Honeywell TFE731-20](https://openairdocs.org/engine/honeywell-tfe731-20.md).

Newest first. General aviation reporting is voluntary.

- [SDR 2026FA0000511](https://openairdocs.org/sdr/2026FA0000511.md): Dipstick · worn · May 17, 2026 · N441PC · Lear 35A · Engine Oil Indicating System
  > NR 1 ENGINE OIL PRESSURE DROPPED PRECIPITOUSLY, PRECAUTIONARY SHUTDOWN PERFORMED
- [SDR G41A2026FA0000235](https://openairdocs.org/sdr/G41A2026FA0000235.md): Fms · defective · Mar 25, 2026 · N824MG · Lear 55LEAR · Flight Management Computing Hardware System
  > AIRCRAFT DEPARTED KELP HEADING TO KAUS. ABOUT 10 MINUTES AFTER TAKEOFF, THE CAPTAIN NOTICED THE FMS SCREEN HAD GONE BLANK. ATTEMPT TOP RE POWER WAS MADE WITH NO EFFECT. THE CAPTAIN DECIDED TO RETURN TO ELP. ATI MAINTENANCE AND AVIONICS MET THE AIRCRAFT AND VE
- [SDR 2025FA0000452](https://openairdocs.org/sdr/2025FA0000452.md): Engine · fire warning · Jul 7, 2025 · N412SW · Lear 31A · Fire Detection
  > RIGHT ENGINE FIRE WARNING “T” HANDLE LIGHT CAME ON IN FLIGHT
- [SDR S2KA202507210452](https://openairdocs.org/sdr/S2KA202507210452.md): Fire Detector · inoperative · Jul 7, 2025 · N412S · Lear 31A · Fire Detection
  > RIGHT ENGINE FIRE WARNING TEE HANDLE LIGHT CAME ON IN FLIGHT. REMOVED RT FIRE DETECTION CONTROL UNIT P/N 37702833 S/N 0143-069 AND INSTALLED REMOVED SERVICEABLE FIRE DETECTION CONTROL UNIT P/N 377-02833, S/N 9938-006 IAWL31A 26-10-01. OPERATIONAL CHECK GOOD
- [SDR 4EZF23030315001](https://openairdocs.org/sdr/4EZF23030315001.md): Unknown · unknown · Mar 15, 2023 · N31ZV · Lear 31A · Fire Detection
  > CREW REPORT - RIGHT ENGINE FIRE T-HANDLE ILLUMINATED IN FLIGHT, MEMORY ITEMS & QRH EMERGENCY PROCEDURES CHECKS WAS FOLLOWED. AIRCRAFT DEPARTED BARRANQUILLA AIRPORT TO FORT LAUDERDALE(NON-REVENUE FLIGHT), DURING CRUISE FIRE WARNING ILLUMINATED. FLIGHT CREW DECI
- [SDR 2021FA0000382](https://openairdocs.org/sdr/2021FA0000382.md): None · worn · Feb 10, 2021 · N183TF · Lear 23LEAR · Engine Thrust Reverser
  > PILOT REPORTS TR WILL NOT STOW. COMPLIED WITH R&R OF THROTTLE QUADRANT ASSEMBLY. OPS TESTED OK. AIRCRAFT OK FOR RTS.
- [SDR JGVR20200831001](https://openairdocs.org/sdr/JGVR20200831001.md): Thru Bolt · stripped · Aug 31, 2020 · N655TC · Amd FALCON900 · Fuselage, Landing Gear Attach Fittings
  > IT WAS BROUGHT TO OUR ATTENTION THAT THE TORQUE VALUE FOR THE FALCON 900 SERIES NLG TRUNNION PIN THROUGH BOLT NUTS IS NOT ACCURATE IN THERE RESPECTIVE MAINTENANCE MANUALS. ACCORDING MANUFACTURER: A DISCREPANCY HAS BEEN SUBMITTED TO UPDATE AMM FOR ALL F2000 AN
- [SDR 9PMA2020042700004](https://openairdocs.org/sdr/9PMA2020042700004.md): Bleed Valve · seized · Sep 17, 2019 · N332AR · Bombdr BD1001A10 · APU Bleed Air System
  > PIC REPORTS APU FAILS TO START. UPON FURTHER INSPECTION FOUND BLEED AIR VALVE SEIZED IN CLOSED POSITION. NO FURTHER DAMAGE CAUSED TO AIRCRAFT, CREW OR PAX.
- [SDR 9PMA2020042700003](https://openairdocs.org/sdr/9PMA2020042700003.md): Brushes · worn · Sep 1, 2019 · N108RL · Raythn HAWKER800XP · AC Generator-Alternator
  > PIC REPORTS NO. 1 ALTERNATOR FAIL WARNING INDICATION SHOWN. AFTER FURTHER INSPECTION FOUND NO. 1 ALTERNATOR BRUSHES WORN. NO DAMAGE TO AIRCRAFT, CREW OR PAX CAUSED.
- [SDR G1IA2019031100000](https://openairdocs.org/sdr/G1IA2019031100000.md): Light · inoperative · Mar 7, 2019 · N10AH · Lear 35A · Landing Gear Position and Warning
  > FAR 135.415 REPORT. PILOT REPORTS "AFTER T/O COPILOT REACHED FOR GEAR HANDLE AND AFTER RETRACTION HE NOTICED THAT PRIOR TO GEAR RETRACTION, THE NOSE GEAR DOWN & LOCK LIGHT WASN'T ON.RETRACTION WAS NORMAL BUT BECAUSE THE LACK OF NOSE GEAR D&L INDIC., WE DECIDED
- [SDR G1IA201806220362](https://openairdocs.org/sdr/G1IA201806220362.md): Carbon Seal · leaking · Jun 20, 2018 · N362FW · Lear 35A · Turbine Engine Oil System
  > SMOKE WAS NOTICED AFTER TAKEOFF AND GREW WORSE DURING CLIMB. THE CABIN APPEARED TO HAVE A SIGNIFICANT AMOUNT OF SMOKE AND THE MEDICS NOTIFIED US THAT IT WAS VERY HOT IN THE BACK. WENT THROUGH THE MEMORY ITEMS AND RAN THE SMOKE IN THE COCKPIT CHECKLIST, DECLA
- [SDR G1IA2018022000001](https://openairdocs.org/sdr/G1IA2018022000001.md): Control Box · faulty · Feb 17, 2018 · N362FW · Lear 35A · Fire Detection
  > PILOT REPORTS "PASSING 5000' ON APPROACH THE L ENGINE FIRE WARNING LIGHT ILLUMINATED AND WENT OUT. THIS REPEATED FOUR TIMES IN THE NEXT 2 MINUTES. THE POWER WAS IMMEDIATELY RETURNED TO IDLE ON THE FIRST OCCURRENCE. THAT CHANGE APPEARED TO HAVE NO EFFECT. MAINT
- [SDR WAIA2017122200001](https://openairdocs.org/sdr/WAIA2017122200001.md): Unknown · odor · Dec 20, 2017 · N111YW · Cessna 650 · Air Distribution System
  > SMELLED A SMOKE ODOR IN THE COCKPIT. FIRST IMPRESSION WAS THAT IT WAS FUMES FROM ANOTHER AIRPLANE. CONTINUED TO THE HOLDING POINT AND RECEIVED A TAXI CLEARANCE. AT THIS POINT THE ODOR HAD BECOME MUCH STRONGER.IMMEDIATELY CANCELED TAXI CLEARANCE AND TURNED BACK
- [SDR 2CJA102023917](https://openairdocs.org/sdr/2CJA102023917.md): Engine · power loss · Mar 29, 2017 · N908TF · Amd FALCON10 · Engine (Turbine/Turboprop)
  > AFTER START UP AND TAXI OUT, RUNNING ALL CHECK LISTS, CLEARED FOR TAKE OFF. MONITORED THE ENGINES ON TAKEOFF. HAD NO WARNING LIGHTS AND TAKE OFF POWER WAS SET. DEPARTED. ABOUT 1000 FT OFF THE GROUND THE NR 1 ENGINE STARTED TO SPOOL BACK. IT TOOK MAYBE
- [SDR 2017FA0000096](https://openairdocs.org/sdr/2017FA0000096.md): Bleed Valve · sticking · Mar 2, 2017 · N33NJ · Lear 45LEAR · Compressor Bleed Valve
  > DURING CLIMB OUT, LT BLEED OVERHEAD CAS MESSAGE. WOULD NOT EXTINGUISH. RETURNED TO DEPARTURE.
- [SDR G1IA2017022210AH1](https://openairdocs.org/sdr/G1IA2017022210AH1.md): Control Switch · sticking · Feb 22, 2017 · N10AH · Lear 35A · Stabilizer Control System
  > PILOT REPORTED AFTER DEPARTURE, PRIMARY PITCH TRIM CONTINUED TO RUN AFTER COPILOT RELEASED THE SWITCH. EXECUTED PITCH TRIM MALFUNCTION EMERGENCY CHECKLIST AND RETURNED TO DEPARTURE AND LANDED. MAINTENANCE WAS ABLE TO DUPLICATE THE PITCH TRIM PROBLEM. REPLACE
- [SDR 2016F00200](https://openairdocs.org/sdr/2016F00200.md): Engine · power loss · Oct 14, 2016 · N389AW · Lear 35A · Engine (Turbine/Turboprop)
  > DURING TAKEOFF ROLL. PILOT SET THRUST LEVERS TO APPROXIMATELY 80 PERCENT AND COMMANDED SET POWER. PM SET TAKEOFF POWER AS ACFT COMMENCED TAKEOFF ROLL. PM/SIC CALLED 80 KTS, PF CONFIRMED 80 KTS. SHORTLY THEREAFTER, BOTH PILOTS SENSED YAW TO LEFT. PIC/PF ATTRIBU
- [SDR J72A20161017001](https://openairdocs.org/sdr/J72A20161017001.md): Engine · power loss · Oct 14, 2016 · N389AW · Lear 35A · Engine (Turbine/Turboprop)
  > AT APPROX 0910(L), COMMENCED TAKEOFF ROLL. PIC/PF SET THRUST LEVERS TO APPROX 80 PERCENT AND COMMANDED SET POWER. PM/SIC CALLED 80 KTS, PF CONFIRMED 80 KTS. SHORTLY THEREAFTER, BOTH PILOTS SENSED YAW TO LT. PIC/PF ATTRIBUTED YAW TO CROSSWIND COMBINED WITH
- [SDR 2016FA0000475](https://openairdocs.org/sdr/2016FA0000475.md): Volt Regulator · burned · Oct 6, 2016 · N389AW · Lear 35A · Air Distribution Fan
  > RIGHT GENERATOR LIGHT ILLUMINATED DURING FINAL APPROACH. DETECTED ODOR OF SMOKE. FOUND THE VOLT REGULATOR BURNED.
- [SDR G1IA2016090935CY1](https://openairdocs.org/sdr/G1IA2016090935CY1.md): Uplock Switch · malfunctioned · Sep 9, 2016 · N35CY · Lear 35A · Landing Gear Door Retract Section
  > AFTER A NORMAL DEPARTURE WHILE CLIMBING THRU ABOUT 15000' THE LEFT GEAR DOOR LIGHT ILLUMNINATED FOR ABOUT 20 SECONDS. REDUCED POWER AND BEGAN SLOWING TO 200 KIAS, AT ABOUT 240 KIAS GEAR LIGHT EXTINGUISHED, APPROXIMATELY 30 SECONDS. LATER AT 250 KIAS THE LIGHT
- [SDR G1IA2016072713504](https://openairdocs.org/sdr/G1IA2016072713504.md): Blower · smoke · Jul 27, 2016 · N135DE · Lear 35A · Air Distribution Fan
  > PILOT REPORTED MEDICAL CREW SMELLED SMOKE IN CABIN. SMOKE OBSERVED COMING FROM OVERHEAD VENTS. CABIN FAN CIRCUIT BREAKER OPENED AND SMOKE DISSIPATED. PRECAUTIONARY LANDING MADE. COCKPIT BLOWER ASSY SEIZED AND INOP WITH HEAT DISTRESS. MAINTENANCE REPLACED
- [SDR SFOA201607290001](https://openairdocs.org/sdr/SFOA201607290001.md): Chip Detector · faulty · Jul 26, 2016 · Cessna 650 · Turbine Engine Oil System
  > WHILE AT CRUISE FLIGHT, THE RT ENGINE CHIP DETECTOR ANNUNCIATOR ILLUMINATED, ALL OTHER ENGINE PARAMETERS WERE NORMAL. AFM PROCEDURES WERE FOLLOWED AND A PRECAUTIONARY AND SAFE LANDING WAS MADE. THE ENGINES WERE SHUTDOWN AND THE ACFT TURNED OVER TO MAINTENANC
- [SDR G1IA201606290001](https://openairdocs.org/sdr/G1IA201606290001.md): Blower · faulty · Jun 25, 2016 · N135DE · Lear 35A · Air Distribution Fan
  > DURING THE DESCENT, WE NOTICED WE WERE SMELLING SMOKE FUMES IN COCKPIT. WE SUSPECTED FUMES FROM STABILIZER WING HEAT AND TURNED THOSE OFF. THE ODOR PERSISTED ON AND OFF, AFTER THAT WE DECIDED BEST COURSE OF ACTION WAS TO CONTINUE DESCENT AND LAND, WE ALSO ST
- [SDR DXTA2016052006241](https://openairdocs.org/sdr/DXTA2016052006241.md): Oil Cap · loose · May 20, 2016 · N860QS · Raythn HAWKER800XP · Engine Oil Storage (Airframe Furnished)
  > NR 1 ENG SHUTDOWN IN FLIGHT DUE TO LOW OIL PRESS. CLEANED RESIDUAL OIL FROM ENG & COWLING. FOUND OTBD OIL SERVICE CAP LOOSE. SERVICED ENG WITH 4 QTS MOBIL 254 OIL. RE-INSTALLED & SERVICED OIL CAP, RAN ENG. LEAK & OPERATIONS CHECKED GOOD. ALL WORK IAW AMM
- [SDR BHKA20160506001](https://openairdocs.org/sdr/BHKA20160506001.md): Warning System · false activation · May 2, 2016 · N16FN · Lear 36A · Fire Detection
  > DURING CLIMB OUT PASSING THROUGH 13,000 FEET MSL, THE NR 2 RT ENG FIRE PULL LIGHT ILLUMINATED IN THE T HANDLE ACCOMPANIED BY FLASHING MSTR WARNING LIGHTS. THE RT THROTTLE WAS REDUCED TO IDLE WITHIN 5 SECONDS & THE ENG FIRE PULL & MSTR WARN LIGHTS EXTINGUISHED
- [SDR O9IA2016011100001](https://openairdocs.org/sdr/O9IA2016011100001.md): Line · cracked · Jan 2, 2016 · N543LM · Lear 35A · Pneumatic Distribution System
  > ON DESCENT, MASTER CAUTION & FIRE LIGHT ILLUMINATED ON LT ENG. THERE WERE NO OTHER FIRE INDICATIONS. ENG WAS BROUGHT TO IDLE & SHUTDOWN USING ENG SHUTDOWN CHECKLIST. A CRACKED HIGH PRESS BLEED AIR LINE WAS DISCOVERED ON THE LT ENG. THE CRACK WAS ON THE JUN
- [SDR G1IA20151124001](https://openairdocs.org/sdr/G1IA20151124001.md): Warning System · activated · Nov 23, 2015 · N60WL · Lear 35A · Cabin Pressure Indicator
  > DEPARTED & EN ROUTE, APPROX 15 - 20 MINS AFTER LEVELING OFF AT FL 360 THE CABIN ALTITUDE WARNING ILLUMINATED. DECLARED AN EMER & INITIATED AN EMER DESCENT & DIVERTED. THE CABIN ALT. STAYED BELOW THE POINT OF O2 MASK ACTIVATION & ONCE THEY DESCENDED TO A SAF
- [SDR G1IA20150602001](https://openairdocs.org/sdr/G1IA20150602001.md): Blower Motor · failed · May 29, 2015 · N36PJ · Lear 36A · Air Distribution Fan
  > FAR 135.415 REPORT. ON CLIMB APPROX 10 MILES OUT FROM THE AIRPORT THEY SMELLED SMOKE ALL OVER THE COCKPIT & CABIN, OXYGEN MASKS WERE DEPLOYED. THEY DECLARED AN EMER & MADE AN UNSCHEDULED LANDING AT THE AIRPORT. INSPECTED THE ACFT, CHECKED THE SYS & RAN THE A
- [SDR HUNA20150129001](https://openairdocs.org/sdr/HUNA20150129001.md): Pump · malfunctioned · Jan 29, 2015 · N45FG · Lear 36LEAR · Engine Fuel Pump
  > ON A FLIGHT, SUFFERED AN INFLIGHT UNCOMMANDED ENG SHUTDOWN OF THE LT ENG. CREW HAD BEEN CLEARED FROM FL 370 TO FL 240 FOR THE DECENT. THE SHUTDOWN OCCURRED AT OR NEAR TOP OF DECENT. THEY DECLARED AN EMER WITH CTR. THE CREW COMPLETED THE APPROPRIATE ACFT CH
- [SDR DXTA2014041605732](https://openairdocs.org/sdr/DXTA2014041605732.md): Deec · malfunctioned · Apr 15, 2014 · N815QS · Raythn HAWKER800XP · Power Indicating System
  > DURING INITIAL CLIMB, CREW FELT LATERAL YAW, NOTICED RT N1 SURGING 3 OR 4 PERCENT. DIMINISHED AT MID POWER SETTING BUT STILL SLIGHTLY NOTICEABLE. CREW DECLARED AN EMERGENCY & RETURNED TO DEPARTURE. ENGINE INDICATIONS ONLY, NO ANNUNCIATOR LIGHTS ILLUMINATED
- [SDR FJTA2014017011](https://openairdocs.org/sdr/FJTA2014017011.md): Cap · unsecure · Jan 16, 2014 · N701DA · Lear 35A · Engine Oil Distribution (Airframe Furnished)
  > AIRCRAFT HAD JUST COMPLETED HEAVY MX CHECK IN KSGH. DURING THE REPOSITION FLIGHT TO KMQY AT THE TOP OF THE CLIMB, THE RT ENG OIL PRESS SLOWLY DECREASED. THE OIL PRESS ANNUNCIATOR ILLUMINATED AT WHICH POINT THE CREW SHUT DOWN THE RT ENG. CONTINUED FLIGHT DUE

## 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 = 'TFE73120'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/engine/honeywell-tfe731-20/reports

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