# N18051: 1937 Monocoupe 90, registration cancelled 2009-10-09

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: October 9, 2009
- Status when cancelled: Registration revoked
- Airframe: [Monocoupe 90](https://openairdocs.org/model/monocoupe-90) (registry code 5810102)
- Engine: [Lambert R266](https://openairdocs.org/engine/lambert-r266) (registry code 38501)
- Data sheets: [TCDS A-306](https://openairdocs.org/tcds/A-306) (OpenAirDocs)
- Serial number: A760
- Year built: 1937
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Last registry action: January 14, 1977
- Mode S code: A143CD
- Owner when cancelled: [Anderson Robert E](https://openairdocs.org/faa-owner/ANDERSON%20ROBERT%20E)
- Location: [Denver, CO](https://openairdocs.org/faa-place/CO/Denver)
- Owner type: Individual
- Owner's area on the map: 39.7392° N, 104.9847° W: Placed by OpenAirDocs: center of Denver, CO, within about 7 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N18051
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=18051
- Page: https://openairdocs.org/deregistered/N18051-2009-10-09

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 Monocoupe 90: https://openairdocs.org/model/monocoupe-90.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 UNK65X0248](https://openairdocs.org/ntsb/UNK65X0248), Oct 11, 1964: Monocoupe 90A (N18051), Watkins, CO, destroyed, 2 fatal

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