# N4YP: Upton MUSTANG M-II, registration cancelled 1994-02-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 23, 1994
- Status when cancelled: Triennial form not returned
- Airframe: [Upton MUSTANG M-II](https://openairdocs.org/model/upton-mustang-m-ii) (registry code 1690425)
- Serial number: MII301
- Type of aircraft: Fixed wing single engine
- Certificate issued: December 19, 1990
- Last registry action: December 21, 1993
- Mode S code: A4AA23
- Owner when cancelled: [Cammack Kevin J](https://openairdocs.org/faa-owner/CAMMACK%20KEVIN%20J)
- Location: [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City)
- Owner type: Individual
- Owner's area on the map: 35.4890° N, 97.5190° W: Placed by OpenAirDocs at the center of ZIP code 73103, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4YP
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4YP
- Page: https://openairdocs.org/deregistered/N4YP-1994-02-23

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 Upton MUSTANG M-II: https://openairdocs.org/model/upton-mustang-m-ii.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 FTW94FA044](https://openairdocs.org/ntsb/FTW94FA044), Dec 5, 1993: Upton Mustang M-II (N4YP), Guthrie, OK, destroyed, 1 fatal. Probable cause: WAS THE IN FLIGHT FAILURE OF THE LEFT AILERON FOR REASONS UNDETERMINED.

## 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 19931205045959A](https://openairdocs.org/incident/19931205045959A), Dec 5, 1993: Amtrbb MUSTANG2 (N4YP), Guthrie, OK, Destroyed, 1 fatal. Came apart in air no witnesses. Pop rivets not replaced for better type on aileron counterweights per manufacterer.

## Other aircraft with N4YP

- [Registered now](https://openairdocs.org/aircraft/N4YP): Piper PA-28-181, S/N 2843284, built 1999

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