# N51721: 1978 Enstrom Helicopter 280C, registration cancelled 2013-04-01

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 1, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Enstrom Helicopter 280C](https://openairdocs.org/model/enstrom-helicopter-280c) (registry code 3300505)
- Engine: [Lycoming HI0-360 series](https://openairdocs.org/engine/lycoming-hi0-360-series) (registry code 41553)
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (OpenAirDocs)
- Serial number: 1127
- Year built: 1978
- Type of aircraft: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Standard, normal
- Airworthiness date: March 31, 1978
- Certificate issued: April 29, 1986
- Last registry action: July 18, 1992
- Mode S code: A67E28
- Owner when cancelled: [Spectrum Helicopters Inc](https://openairdocs.org/faa-owner/SPECTRUM%20HELICOPTERS%20INC)
- Location: [Ridgefield Park, NJ](https://openairdocs.org/faa-place/NJ/Ridgefield%20Park)
- Owner type: Corporation
- Owner's area on the map: 40.8547° N, 74.0199° W: Placed by OpenAirDocs at the center of ZIP code 07660, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N51721
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=51721
- Page: https://openairdocs.org/deregistered/N51721-2013-04-01

From the FAA registry file of November 4, 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 Enstrom Helicopter 280C: https://openairdocs.org/model/enstrom-helicopter-280c.md

## 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 NYC86LA107](https://openairdocs.org/ntsb/NYC86LA107), Apr 18, 1986: Enstrom F-280C (N51721), Ridgefield, NJ, substantial damage

## 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 19860418014779A](https://openairdocs.org/incident/19860418014779A), Apr 18, 1986: Enstrm 280C (N51721), Ridgefield Park, NJ, Substantial damage. The helicopter impacted the water during takeoff. No mechanical malfunctions found. Pilot was noted to be rushing

## Other aircraft with N51721

- [Cancelled 1955-10-20](https://openairdocs.org/deregistered/N51721-1955-10-20): Fairchild M-62A, S/N T43-5657. Owner: [Hanson Orville G](https://openairdocs.org/faa-owner/HANSON%20ORVILLE%20G), [Tulsa, OK](https://openairdocs.org/faa-place/OK/Tulsa)

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