# N473WM: 1979 Mojonnier-William BD-4, registration cancelled 2012-12-11

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 11, 2012
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Mojonnier-William BD-4](https://openairdocs.org/model/mojonnier-william-bd-4) (registry code 1130487)
- Engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514)
- Serial number: 473
- Year built: 1979
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: February 28, 1980
- Certificate issued: August 18, 1978
- Last registry action: June 5, 1982
- Mode S code: A5CE3F
- Owner when cancelled: [Mojonnier William Hurlbut](https://openairdocs.org/faa-owner/MOJONNIER%20WILLIAM%20HURLBUT)
- Location: [Sylmar, CA](https://openairdocs.org/faa-place/CA/Sylmar)
- Owner type: Individual
- Owner's area on the map: 34.3269° N, 118.3822° W: Placed by OpenAirDocs at the center of ZIP code 91342, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N473WM
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=473WM
- Page: https://openairdocs.org/deregistered/N473WM-2012-12-11

From the FAA registry file of October 28, 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 Mojonnier-William BD-4: https://openairdocs.org/model/mojonnier-william-bd-4.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 LAX81FUQ22](https://openairdocs.org/ntsb/LAX81FUQ22), Jun 1, 1981: Bede BD-4 (N473WM), Pacoima, CA, destroyed, 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 19810601047879A](https://openairdocs.org/incident/19810601047879A), Jun 1, 1981: Amtrbd BEDEBD4 (N473WM), Pacoima, CA, Destroyed. Indicates loss of control en route on night flight. Hilly terrain, few ground lights.

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