# N21AS: Dornier DO 28 D-1, registration cancelled 1991-03-21

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 21, 1991
- Status when cancelled: Triennial form not returned
- Airframe: [Dornier DO 28 D-1](https://openairdocs.org/model/dornier-do-28-d-1) (registry code 2991404)
- Data sheets: [TCDS A16EU](https://openairdocs.org/tcds/A16EU) (OpenAirDocs)
- Serial number: 4004
- Type of aircraft: Fixed wing multi engine
- Certificate issued: March 28, 1978
- Last registry action: January 31, 1991
- Mode S code: A1B73A
- Owner when cancelled: [Bush Air Inc](https://openairdocs.org/faa-owner/BUSH%20AIR%20INC)
- Location: [Bethel, AK](https://openairdocs.org/faa-place/AK/Bethel)
- Owner type: Corporation
- Owner's area on the map: 60.7633° N, 161.8694° W: Placed by OpenAirDocs at the center of ZIP code 99559, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N21AS
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21AS
- Page: https://openairdocs.org/deregistered/N21AS-1991-03-21

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 Dornier DO 28 D-1: https://openairdocs.org/model/dornier-do-28-d-1.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 ANC78FA027](https://openairdocs.org/ntsb/ANC78FA027), Apr 2, 1978: Dornier DO-28D (N21AS), Bethel, AK, destroyed, 2 fatal

## 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 19780402042389A](https://openairdocs.org/incident/19780402042389A), Apr 2, 1978: Dorner DO28D1 (N21AS), Bethel, AK, Destroyed, 1 fatal

## Other aircraft with N21AS

- [Registered now](https://openairdocs.org/aircraft/N21AS): Piper PA-28R-180, S/N 28R-30862, built 1968

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