# N39TW: 1992 Learjet 31A, registration cancelled 2011-07-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 20, 2011
- Exported to: Argentina
- Status when cancelled: Valid registration
- Airframe: [Learjet 31A](https://openairdocs.org/model/learjet-31a) (registry code 5170531)
- Engine: [Garrett TFE731 series](https://openairdocs.org/engine/garrett-tfe731-series) (registry code 29001)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE), [TCDS E6WE](https://openairdocs.org/tcds/E6WE) (OpenAirDocs)
- Serial number: 047
- Year built: 1992
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: January 14, 1992
- Certificate issued: May 26, 2011
- Last registry action: May 26, 2011
- Mode S code: A4822E
- Owner when cancelled: [Bell Aviation Inc](https://openairdocs.org/faa-owner/BELL%20AVIATION%20INC)
- Location: [West Columbia, SC](https://openairdocs.org/faa-place/SC/West%20Columbia)
- Owner type: Corporation
- Owner's area on the map: 33.9392° N, 81.1445° W: Placed by OpenAirDocs at the center of ZIP code 29170, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N39TW
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=39TW
- Page: https://openairdocs.org/deregistered/N39TW-2011-07-20

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Learjet 31A: https://openairdocs.org/model/learjet-31a.md

## Service difficulty reports (6)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR AOQ2006F00001](https://openairdocs.org/sdr/AOQ2006F00001), Jan 11, 2006: SELECTOR VALVE. INTERMITTENT. NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED UPON GEAR RETRACTION. CREW RECYCLED GEAR AND ALL LIGHTS EXTINGUISHED. MAINTENANCE INSPECTED LANDING GEAR SYSTEM AND 
- [SDR ON39TW120605JC](https://openairdocs.org/sdr/ON39TW120605JC), Dec 6, 2005: CONTROL VALVE. LEAKING. NOSE GEAR RED UNSAFE LIGHT DID NOT EXTINGUISH ON TAKEOFF, FOLLOWED BY BOTH MAIN GEAR UNSAFE LIGHTS (RED) ILLUMINATING. GEAR WAS EXTENDED AND ALL T3 GEAR INDICAT
- [SDR AOQ2005F00004](https://openairdocs.org/sdr/AOQ2005F00004), Jul 20, 2005: FIRE DETECTOR. MALFUNCTIONED. DURING CLIMB, NR 1 ENGINE FIRE WARNING LIGHT ILLUMINATED AT ITT 802 DEGREES, REDUCED TO 760 DEGREES, LIGHT EXTINGUISHED. ENGINE INDICATIONS WERE NORMAL. VISUALL
- [SDR AOQ2005F00003](https://openairdocs.org/sdr/AOQ2005F00003), Jul 17, 2005: GASKET. WORN. DURING CLIMB, AT ALTITUDE, THE NR 1 ENGINE FIRE WARNING ILLUMINATED, ITT INDICATED 805 DEGREES. THRUST REDUCED BELOW 790 DEGREES ITT, AND LIGHT WENT OUT. ALL EN
- [SDR 39TW070405JC](https://openairdocs.org/sdr/39TW070405JC), Jul 4, 2005: WARNING LIGHT. FALSE ACTIVATION. NR 2 MAIN GEAR UNSAFE LIGHTS DID NOT EXTINGUISH DEPARTING. PREVIOUS GEAR CYCLES WERE UNEVENTFUL. LAST GEAR CYCLE INTO ISP WAS NORMAL. JACKED AIRCRAFT, INSPECTED
- [SDR AOQ2005F00002](https://openairdocs.org/sdr/AOQ2005F00002), Jun 16, 2005: GASKET. WORN. DURING CLIMB, AT ALTITUDE, THE NR 2 ENGINE FIRE WARNING ILLUMINATED, ITT INDICATED 801 DEGREES, WARNING CEASED WITHIN 10 SECONDS AFTER THRUST WAS REDUCED BELOW 

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