# N971K: 1980 Gates Learjet 35A, registration cancelled 2008-01-11

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: January 11, 2008
- Exported to: Argentina
- Status when cancelled: Triennial form not returned
- Airframe: [Gates Learjet 35A](https://openairdocs.org/model/gates-learjet-35a) (registry code 5170602)
- 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: 373
- Year built: 1980
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard, transport
- Airworthiness date: December 24, 1980
- Certificate issued: January 3, 1997
- Last registry action: January 18, 2005
- Mode S code: AD883D
- Owner when cancelled: [I J Knight Inc](https://openairdocs.org/faa-owner/I%20J%20KNIGHT%20INC)
- Location: [New Tripoli, PA](https://openairdocs.org/faa-place/PA/New%20Tripoli)
- Owner type: Corporation
- Owner's area on the map: 40.6645° N, 75.7401° W: Placed by OpenAirDocs at the center of ZIP code 18066, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N971K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=971K
- Page: https://openairdocs.org/deregistered/N971K-2008-01-11

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 Gates Learjet 35A: https://openairdocs.org/model/gates-learjet-35a.md

## Service difficulty reports (2)

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

- [SDR KNI2005F00000](https://openairdocs.org/sdr/KNI2005F00000), Nov 29, 2004: LINE. FAILED. CREW REPORTED THAT LANDIND GEAR EXTENSION TOOK LONGER THAN NORMAL TO EXTEND. WHEN DOWN AND LOCKED WAS ACHIEVED, CREW NOTICED COMPLETE LOSS OF HYDRAULIC PRESSURE
- [SDR I122003F00000](https://openairdocs.org/sdr/I122003F00000), Nov 22, 2002: SWITCH. FAILED. MACH OVERSPEED SWITCH FAILED DURING FUNCTIONAL TEST.

## Other aircraft with N971K

- [Cancelled 1934-09-07](https://openairdocs.org/deregistered/N971K-1934-09-07): Joseph Steinhouser PRIMARY GLIDER, S/N 100 SUB. Owner: [H L Kuchins](https://openairdocs.org/faa-owner/H%20L%20KUCHINS), [St Louis, MO](https://openairdocs.org/faa-place/MO/St%20Louis)

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