# N666TW: Gates Lear Jet 25B, registration cancelled 2003-11-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 17, 2003
- Status when cancelled: Triennial form not returned
- Airframe: [Gates Lear Jet 25B](https://openairdocs.org/model/gates-lear-jet-25b) (registry code 5170511)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs)
- Serial number: 116
- Type of aircraft: Fixed wing multi engine
- Airworthiness: Standard, transport
- Airworthiness date: August 20, 1980
- Certificate issued: March 18, 1996
- Last registry action: September 16, 2003
- Mode S code: A8CC41
- Owner when cancelled: [Sierra American Corporation](https://openairdocs.org/faa-owner/SIERRA%20AMERICAN%20CORPORATION)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7376° N, 75.6671° W: Placed by OpenAirDocs at the center of ZIP code 19808, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N666TW
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=666TW
- Page: https://openairdocs.org/deregistered/N666TW-2003-11-17

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 Lear Jet 25B: https://openairdocs.org/model/gates-lear-jet-25b.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 HAEA00041](https://openairdocs.org/sdr/HAEA00041), Sep 9, 2002: SQUAT SWITCH. OUT OF ADJUST. AIRCRAFT DEPARTED ADS FOR MFE, CLIMBING OUT, CABIN ALTITUDE CLIMBED WITH AIRCRAFT. RETURNED TO DEPARTURE AIRPORT FOR MAINTENANCE. ADJUSTED RT SQUAT SWITCH, AIRC
- [SDR 00015](https://openairdocs.org/sdr/00015), Apr 11, 2002: ENGINE. FLAMED OUT. MODERATE TURBULENCE CLIMB FLAME-OUT RT ENGINE. DESCENT NORMAL RESTART.

## 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 FTW03FA229](https://openairdocs.org/ntsb/FTW03FA229), Sep 19, 2003: Learjet 25B (N666TW), Del Rio, TX, destroyed, 1 fatal. Probable cause: The pilot's misjudged distance and speed during the approach to landing, and his failure to obtain the proper touchdown point resulting in an overrun. A contributing factor was the pilot's failure to…

## FAA accident and incident reports (1)

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.

- [Accident 20030919034939A](https://openairdocs.org/incident/20030919034939A), Sep 19, 2003: Lear 25B (N666TW), Del Rio, TX, Destroyed, 1 fatal. (-23) The aircraft attempted landing at 3,800 ft beyond landing threshold of a 5,000 ft runway overshot and crashed. The aircraft burned on impact.

## Other aircraft with N666TW

- [Cancelled 2019-09-06](https://openairdocs.org/deregistered/N666TW-2019-09-06): Aerovironment PUMA AE, S/N 1476. Registration expired, pending cancellation. Owner: [Wintec Arrowmaker](https://openairdocs.org/faa-owner/WINTEC%20ARROWMAKER), [Tampa, FL](https://openairdocs.org/faa-place/FL/Tampa)

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