# N6740: 1928 Monocoupe 70, registration cancelled 2017-05-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 23, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Monocoupe 70](https://openairdocs.org/model/monocoupe-70) (registry code 9250212)
- Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20) (OpenAirDocs)
- Serial number: 151
- Year built: 1928
- Type of aircraft: Fixed wing single engine
- Airworthiness: Standard, normal
- Airworthiness date: May 9, 1995
- Certificate issued: June 2, 2000
- Last registry action: May 19, 2009
- Mode S code: A8ECEC
- Owner when cancelled: [Hiller Aviation Museum](https://openairdocs.org/faa-owner/HILLER%20AVIATION%20MUSEUM)
- Location: [San Carlos, CA](https://openairdocs.org/faa-place/CA/San%20Carlos)
- Owner type: Corporation
- Owner's area on the map: 37.4965° N, 122.2726° W: Placed by OpenAirDocs at the center of ZIP code 94070, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N6740
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6740
- Page: https://openairdocs.org/deregistered/N6740-2017-05-23

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 Monocoupe 70: https://openairdocs.org/model/monocoupe-70.md

## 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 19980731046729A](https://openairdocs.org/incident/19980731046729A), Jul 31, 1998: N6740, Hen Holstein, WI, No damage. (-23) Pilot observed loose part in value assy. Prior to flight, and corrected it himself. Aircraft lost power after takeoff. Pilot turned toward runway. Pilot…

## Other aircraft with N6740

- [Cancelled 1972-11-02](https://openairdocs.org/deregistered/N6740-1972-11-02): Grumman OV-1D, S/N 61-2699. Owner: [Treasury Dept](https://openairdocs.org/faa-owner/TREASURY%20DEPT), [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)
- [Cancelled 1972-10-19](https://openairdocs.org/deregistered/N6740-1972-10-19): Grumman OV-1C, S/N 60-3750. Owner: [U S Treasury Dept](https://openairdocs.org/faa-owner/U%20S%20TREASURY%20DEPT), [Washington, DC](https://openairdocs.org/faa-place/DC/Washington)

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