# N173M: 1981 Gregory SPENCER AIRCAR S12DG, registration cancelled 2013-09-13

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 13, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Gregory SPENCER AIRCAR S12DG](https://openairdocs.org/model/gregory-spencer-aircar-s12dg) (registry code 9570411)
- Engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027)
- Serial number: 173
- Year built: 1981
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: August 2, 1986
- Certificate issued: November 1, 1990
- Last registry action: December 23, 1999
- Mode S code: A12565
- Owner when cancelled: [Johnson Rodger A](https://openairdocs.org/faa-owner/JOHNSON%20RODGER%20A)
- Location: [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)
- Owner type: Individual
- Owner's area on the map: 38.8925° N, 77.0538° W: Placed by OpenAirDocs at the center of ZIP code 20037, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N173M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=173M
- Page: https://openairdocs.org/deregistered/N173M-2013-09-13

From the FAA registry file of October 29, 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 Gregory SPENCER AIRCAR S12DG: https://openairdocs.org/model/gregory-spencer-aircar-s12dg.md

## Other aircraft with N173M

- [Registered now](https://openairdocs.org/aircraft/N173M): Piper PA-32R-301, S/N 32R-8113087, built 1981
- [Cancelled 1941-05-15](https://openairdocs.org/deregistered/N173M-1941-05-15): New Standard STANDARD D-29A, S/N 1020. Owner: [Century Of Progress Flying Club Inc](https://openairdocs.org/faa-owner/CENTURY%20OF%20PROGRESS%20FLYING%20CLUB%20INC), [Clifton, NJ](https://openairdocs.org/faa-place/NJ/Clifton)

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