# N521H: 1976 Enstrom F-28A, registration cancelled 2015-05-19

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 19, 2015
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Enstrom F-28A](https://openairdocs.org/model/enstrom-f-28a) (registry code 3300406)
- Engine: [Lycoming HIO-360 series](https://openairdocs.org/engine/lycoming-hio-360-series) (registry code 41524)
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE), [TCDS 1E10](https://openairdocs.org/tcds/1E10) (OpenAirDocs)
- Serial number: 324
- Year built: 1976
- Type of aircraft: Rotorcraft
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: April 16, 1976
- Certificate issued: November 28, 1979
- Last registry action: September 3, 1988
- Mode S code: A68D54
- Owner when cancelled: [Reinhard Joseph R](https://openairdocs.org/faa-owner/REINHARD%20JOSEPH%20R)
- Location: [Cupertino, CA](https://openairdocs.org/faa-place/CA/Cupertino)
- Owner type: Individual
- Owner's area on the map: 37.3094° N, 122.0884° W: Placed by OpenAirDocs at the center of ZIP code 95014, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N521H
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=521H
- Page: https://openairdocs.org/deregistered/N521H-2015-05-19

From the FAA registry file of November 3, 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 F-28A: https://openairdocs.org/model/enstrom-f-28a.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 LAX80DVA06](https://openairdocs.org/ntsb/LAX80DVA06), Dec 12, 1979: Enstrom F-28A (N521H), Woodlake, CA, 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 19791212033159A](https://openairdocs.org/incident/19791212033159A), Dec 12, 1979: Enstrm F28A (N521H), Woodlake, CA, Substantial damage. Pilot said he took off and let rotor RPM get too low. While ccorrecting he hit wire.

## Other aircraft with N521H

- [Registered now](https://openairdocs.org/aircraft/N521H): Bell Textron Canada 505, S/N 65409, built 2022

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