# N90421: 1979 Sikorsky S-76, registration cancelled 2006-11-01

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 1, 2006
- Status when cancelled: Triennial form not returned
- Airframe: [Sikorsky S-76](https://openairdocs.org/model/sikorsky-s-76) (registry code 8143010)
- Engine: [Allison 250-C30 series](https://openairdocs.org/engine/allison-250-c30-series) (registry code 03015)
- Data sheets: [TCDS H1NE](https://openairdocs.org/tcds/H1NE), [TCDS E1GL](https://openairdocs.org/tcds/E1GL) (OpenAirDocs)
- Serial number: 760039
- Year built: 1979
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, transport
- Airworthiness date: May 12, 1987
- Certificate issued: August 29, 1994
- Last registry action: September 19, 2006
- Mode S code: AC80C0
- Owner when cancelled: [Houston Helicopters Inc](https://openairdocs.org/faa-owner/HOUSTON%20HELICOPTERS%20INC)
- Location: [Pearland, TX](https://openairdocs.org/faa-place/TX/Pearland)
- Owner type: Corporation
- Owner's area on the map: 29.5636° N, 95.2860° W: Placed by OpenAirDocs: center of Pearland, TX, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N90421
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=90421
- Page: https://openairdocs.org/deregistered/N90421-2006-11-01

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 Sikorsky S-76: https://openairdocs.org/model/sikorsky-s-76.md

## Service difficulty reports (1)

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

- [SDR 2002F00882](https://openairdocs.org/sdr/2002F00882), Sep 12, 2002: BLADE. CRACKED. DURING A PREFLIGHT INSPECTION, THE MAIN ROTOR BLADE WAS FOUND TO BE DEBONDING AT STATION 57.75 THROUGH 77.75. THERE WAS A SMALL VOID, 1.25 INCHES, AT STATION 78

## 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 DFW05MA230](https://openairdocs.org/ntsb/DFW05MA230), Sep 6, 2005: Sikorsky S76 (N90421), Gulf of Mexico, TX, destroyed. Probable cause: The pilots' delayed response to the No. 1 engine fire warning and the loss of power to both engines, which occurred for undetermined reasons. The pilots' delayed response was most likely due to…

## 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.

- [Accident 20050906020739A](https://openairdocs.org/incident/20050906020739A), Sep 6, 2005: Skrsky S76A (N90421), Sabine Pass, TX, Destroyed. (-23) On September 6, 2005, a Sikorsky sk 76-A, N90421, departed on a flight from the bob keller located at N28.04- W94.22 in the gulf of mexico-high island…
- [Incident 20050125001529I](https://openairdocs.org/incident/20050125001529I), Jan 25, 2005: Skrsky S76 (N90421), Cameron, LA, Minor damage. (-23) At approximately 0730, N90421, a SK-76A with 10 passengers and a crew of 2 were due to depart Cameron, LA. To an offshore platform (HI-296). Pilots were…
- [Incident 19881116066229I](https://openairdocs.org/incident/19881116066229I), Nov 16, 1988: Skrsky S76A (N90421), Leesville, LA. Landed on deck. Ship rolled and helicopter slid. Took off. Engine malfunctioned. Forced landing on water.

## Other aircraft with N90421

- [Cancelled 2011-06-06](https://openairdocs.org/deregistered/N90421-2011-06-06): Cessna T206H, S/N T20608972, built 2010. Exported to Brazil. Owner: [Cessna Aircraft Co](https://openairdocs.org/faa-owner/CESSNA%20AIRCRAFT%20CO), [Independence, KS](https://openairdocs.org/faa-place/KS/Independence)
- [Cancelled 1961-10-03](https://openairdocs.org/deregistered/N90421-1961-10-03): Douglas C54B-DC, S/N 18394. Owner: [Seven Seas Airlines Inc](https://openairdocs.org/faa-owner/SEVEN%20SEAS%20AIRLINES%20INC), [New York, NY](https://openairdocs.org/faa-place/NY/New%20York)

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