# N81637: 1945 Aeronca 7AC, registration cancelled 1973-09-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 14, 1973
- Status when cancelled: Valid registration
- Airframe: [Aeronca 7AC](https://openairdocs.org/model/aeronca-7ac) (registry code 2110102)
- Data sheets: [TCDS A-759](https://openairdocs.org/tcds/A-759) (OpenAirDocs)
- Serial number: 7AC-256
- Year built: 1945
- Type of aircraft: Fixed wing single engine
- Certificate issued: December 18, 1968
- Mode S code: AB2287
- Owner when cancelled: [Benziger Adrian F](https://openairdocs.org/faa-owner/BENZIGER%20ADRIAN%20F)
- Location: [Culpeper, VA](https://openairdocs.org/faa-place/VA/Culpeper)
- Owner type: Individual
- The mark today: https://openairdocs.org/aircraft/N81637
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=81637
- Page: https://openairdocs.org/deregistered/N81637-1973-09-14

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 Aeronca 7AC: https://openairdocs.org/model/aeronca-7ac.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 NYC73AN011](https://openairdocs.org/ntsb/NYC73AN011), Jul 16, 1972: Aeronca 7AC (N81637), Culpeper, VA, destroyed, 2 fatal

## Other aircraft with N81637

- [Cancelled 2022-05-28](https://openairdocs.org/deregistered/N81637-2022-05-28): Aerovodochody L-29 DELFIN, S/N 591627, built 1966. First renewal notice. Owner: [Sky West Aviation Inc Trustee](https://openairdocs.org/faa-owner/SKY%20WEST%20AVIATION%20INC%20TRUSTEE), [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque)
- [Cancelled (date not recorded)](https://openairdocs.org/deregistered/N81637-undated): Piper PA-34-220T, S/N 348233085. N-number assigned, not yet registered

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.