# N444TW: 1977 Gates Lear Jet 24F, registration cancelled 2009-10-13

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 13, 2009
- Status when cancelled: Triennial form not returned
- Airframe: [Gates Lear Jet 24F](https://openairdocs.org/model/gates-lear-jet-24f) (registry code 5170317)
- Engine: [GE CJ610-SER series](https://openairdocs.org/engine/ge-cj610-ser-series) (registry code 30006)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE), [TCDS 1E16](https://openairdocs.org/tcds/1E16) (OpenAirDocs)
- Serial number: 348
- Year built: 1977
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-jet
- Airworthiness: Standard, transport
- Airworthiness date: March 29, 1977
- Certificate issued: March 9, 1994
- Last registry action: September 15, 2009
- Mode S code: A55B37
- Owner when cancelled: [Sierra American Corp](https://openairdocs.org/faa-owner/SIERRA%20AMERICAN%20CORP)
- 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/N444TW
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=444TW
- Page: https://openairdocs.org/deregistered/N444TW-2009-10-13

From the FAA registry file of November 5, 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 24F: https://openairdocs.org/model/gates-lear-jet-24f.md

## Service difficulty reports (4)

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

- [SDR HAEA200400160](https://openairdocs.org/sdr/HAEA200400160), Jul 26, 2004: FIRE LOOP. FALSE INDICATION. ENGINE NR 1 FIRE DETECTION WARNING ILLUMINATES AT EXHAUST TEMPS OF EXCEEDING 600 DEGREES CELSIUS IN CLIMB-OUT OR IN WARM AMBIENT TEMPS. REPLACED UPPER COWLING S
- [SDR 00141](https://openairdocs.org/sdr/00141), May 24, 2004: ENGINE. FLAMED OUT. AIRCRAFT ENCOUNTERED TURBULENCE AT FL390K. LT ENGINE FLAMED OUT. ENGINE RELIGHT NORMAL.
- [SDR 00030](https://openairdocs.org/sdr/00030), Jun 19, 2002: ENGINE. FLAMED OUT. AIRCRAFT EN ROUTE FROM ELP TO MCI CLIMBING THROUGH FL420 TO FL450 RT ENGINE FLAMED OUT. DESCENT TO FL250, PERFORMED RESTART AND CLIMBED BACK TO FL410, COMPLETED
- [SDR 00005](https://openairdocs.org/sdr/00005), Oct 25, 2001: HYDRAULIC LINE. LEAKING. LEAK AT THE RETURN LINE TO ENGINE DRIVEN HYDRAULIC PUMP IN HELL HOLE OF AIRCRAFT.

## 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 MIA07RA034](https://openairdocs.org/ntsb/MIA07RA034), Jan 10, 2007: Gates Learjet 24F (N444TW), Guadalajara, Mexico, destroyed, 2 fatal

## FAA accident and incident reports (3)

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.

- [Incident 19990729033659I](https://openairdocs.org/incident/19990729033659I), Jul 29, 1999: Lear 24F (N444TW), Toledo, OH. (-23) Additional training and FAR135 check received by both pilots. Letter of correction pending submission of supporting documents. (From attachment) on July…
- [Incident 19971210042989I](https://openairdocs.org/incident/19971210042989I), Dec 10, 1997: Lear 24F (N444TW), Nashville, TN, Minor damage. Narrative: antiskid system failed causing failures of braking system and steering system.
- [Incident 19940828036109I](https://openairdocs.org/incident/19940828036109I), Aug 28, 1994: Lear 24 (N444TW), Pontiac, MI, Minor damage. Heavy rain near end landing roll. Lost visibility. Veered off runway struck sign and lights.

## Other aircraft with N444TW

- [Cancelled 2021-03-11](https://openairdocs.org/deregistered/N444TW-2021-03-11): Faist Rr/Faist ML LANCAIR ES-P, S/N ESP-195-5, built 2013. Second renewal notice. Owner: [Whalen Thomas J](https://openairdocs.org/faa-owner/WHALEN%20THOMAS%20J), [Norman, OK](https://openairdocs.org/faa-place/OK/Norman)
- [Cancelled 1991-05-07](https://openairdocs.org/deregistered/N444TW-1991-05-07): Beech 200, S/N BB80. Exported to France. Owner: [Sacramento Aviation Inc](https://openairdocs.org/faa-owner/SACRAMENTO%20AVIATION%20INC), [Sacramento, CA](https://openairdocs.org/faa-place/CA/Sacramento)

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