# N6421K: Downer REPUBLIC RC-3, registration cancelled 1994-12-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 30, 1994
- Status when cancelled: Triennial form not returned
- Airframe: [Downer REPUBLIC RC-3](https://openairdocs.org/model/downer-republic-rc-3) (registry code 3080204)
- Serial number: 666
- Type of aircraft: Fixed wing single engine
- Certificate issued: February 26, 1991
- Last registry action: February 16, 1994
- Mode S code: A86F2E
- Owner when cancelled: [Acosta Antonio A](https://openairdocs.org/faa-owner/ACOSTA%20ANTONIO%20A)
- Location: [Old Tappan, NJ](https://openairdocs.org/faa-place/NJ/Old%20Tappan)
- Owner type: Individual
- Owner's area on the map: 41.0033° N, 74.0017° W: Placed by OpenAirDocs at the center of ZIP code 07675, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N6421K
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6421K
- Page: https://openairdocs.org/deregistered/N6421K-1994-12-30

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 Downer REPUBLIC RC-3: https://openairdocs.org/model/downer-republic-rc-3.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 NYC81FA077](https://openairdocs.org/ntsb/NYC81FA077), Aug 21, 1981: Republic RC-3 (N6421K), Greenfield, ME, substantial damage, 1 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 19810821050829A](https://openairdocs.org/incident/19810821050829A), Aug 21, 1981: Stolam RC3 (N6421K), Greenfield, ME, Substantial damage, 1 fatal. Ran out of fuel en route. Crashed in trees short of intended clearing. Was over gross on original takeoff.

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