# N4539Q: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 1
- Last cancelled: August 14, 2013
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4539Q
- Page: https://openairdocs.org/aircraft/N4539Q

## Aircraft that carried N4539Q

- [Cancelled 2013-08-14](https://openairdocs.org/deregistered/N4539Q-2013-08-14): Grumman American Avn. AA-5B, S/N AA5B1303, built 1979. Registration expired, pending cancellation. Owner: [Irwin Michael J](https://openairdocs.org/faa-owner/IRWIN%20MICHAEL%20J), [Littleton, CO](https://openairdocs.org/faa-place/CO/Littleton)

## NTSB investigations on N4539Q (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 on N4539Q (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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.