# N4539Q: 1979 Grumman American Avn. AA-5B, registration cancelled 2013-08-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 14, 2013
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Grumman American Avn. AA-5B](https://openairdocs.org/model/grumman-american-avn-aa-5b) (registry code 3960105)
- Engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514)
- Data sheets: [TCDS A16EA](https://openairdocs.org/tcds/A16EA) (OpenAirDocs)
- Serial number: AA5B1303
- Year built: 1979
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal, utility
- Airworthiness date: November 16, 1979
- Certificate issued: November 6, 1981
- Last registry action: January 5, 1985
- Mode S code: A580E3
- Owner when cancelled: [Irwin Michael J](https://openairdocs.org/faa-owner/IRWIN%20MICHAEL%20J)
- Location: [Littleton, CO](https://openairdocs.org/faa-place/CO/Littleton)
- Owner type: Individual
- Owner's area on the map: 39.5904° N, 105.0201° W: Placed by OpenAirDocs: center of Littleton, CO, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4539Q
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4539Q
- Page: https://openairdocs.org/deregistered/N4539Q-2013-08-14

From the FAA registry file of November 3, 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 Grumman American Avn. AA-5B: https://openairdocs.org/model/grumman-american-avn-aa-5b.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 DEN81FA049](https://openairdocs.org/ntsb/DEN81FA049), Jul 12, 1981: Gulf-Amer AA-5B (N4539Q), Crested Butte, CO, destroyed, 4 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 19810712043769A](https://openairdocs.org/incident/19810712043769A), Jul 12, 1981: Grumav AA5B (N4539Q), Crested Butte, CO, Destroyed, 3 fatal. Impacted trees near cloud-obscured mountain-top. Was near gross weight and service ceiling. Aft CG. Below moca.

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