# N4700U: Cessna 180G, registration cancelled 1991-09-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 20, 1991
- Status when cancelled: Valid registration
- Airframe: [Cessna 180G](https://openairdocs.org/model/cessna-180g) (registry code 2072616)
- Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6) (OpenAirDocs)
- Serial number: 18051400
- Type of aircraft: Fixed wing single engine
- Certificate issued: September 14, 1990
- Last registry action: September 18, 1990
- Mode S code: A5C385
- Owners when cancelled: [Backus G Lynn](https://openairdocs.org/faa-owner/BACKUS%20G%20LYNN), [Willis Maxl](https://openairdocs.org/faa-owner/WILLIS%20MAXL)
- Location: [Winnemucca, NV](https://openairdocs.org/faa-place/NV/Winnemucca)
- Owner type: Co-owned
- Owner's area on the map: 41.1211° N, 118.0085° W: Placed by OpenAirDocs at the center of ZIP code 89445, within about 30 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4700U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4700U
- Page: https://openairdocs.org/deregistered/N4700U-1991-09-20

From the FAA registry file of November 12, 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 Cessna 180G: https://openairdocs.org/model/cessna-180g.md

## NTSB investigations (2)

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 SEA91LA139](https://openairdocs.org/ntsb/SEA91LA139), Jun 22, 1991: Cessna 180G (N4700U), Challis, ID, substantial damage. Probable cause: THAT THE PILOT ENCOUNTERED UNSUITABLE TERRAIN DURING A FORCED LANDING AFTER A POWER LOSS DUE TO A FRACTURED CYLINDER BOSS AND A BENT ENGINE PUSHROD.
- [NTSB SEA73DYA33](https://openairdocs.org/ntsb/SEA73DYA33), Jun 22, 1973: Cessna 180 (N4700U), Boise, ID, substantial damage

## FAA accident and incident reports (2)

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 19910622023369A](https://openairdocs.org/incident/19910622023369A), Jun 22, 1991: Cessna 180G (N4700U), Challis, ID, Substantial damage. Engine roughened and popped on leveling off. Turned back but crash landed. Cylinder rocker arm boss failed.
- [Accident 19730622016079A](https://openairdocs.org/incident/19730622016079A), Jun 22, 1973: Cessna 180G (N4700U), Boise, ID, Substantial damage

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