# N9966U: Grumman American Avn. AA-5A, registration cancelled 2009-07-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 22, 2009
- Status when cancelled: Registration revoked
- Airframe: [Grumman American Avn. AA-5A](https://openairdocs.org/model/grumman-american-avn-aa-5a) (registry code 3960106)
- Data sheets: [TCDS A16EA](https://openairdocs.org/tcds/A16EA) (OpenAirDocs)
- Serial number: AA5A0366
- Type of aircraft: Fixed wing single engine
- Airworthiness: Standard, normal, utility
- Airworthiness date: April 18, 1977
- Certificate issued: October 11, 1977
- Last registry action: October 15, 1977
- Mode S code: ADEC2A
- Owner when cancelled: [Aero Tech Inc](https://openairdocs.org/faa-owner/AERO%20TECH%20INC)
- Location: [Minneapolis, MN](https://openairdocs.org/faa-place/MN/Minneapolis)
- Owner type: Corporation
- Owner's area on the map: 45.0967° N, 93.2537° W: Placed by OpenAirDocs at the center of ZIP code 55432, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9966U
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9966U
- Page: https://openairdocs.org/deregistered/N9966U-2009-07-22

From the FAA registry file of November 4, 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-5A: https://openairdocs.org/model/grumman-american-avn-aa-5a.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 SEA79FA048](https://openairdocs.org/ntsb/SEA79FA048), Jul 24, 1979: Grum Amer AA-5A (N9966U), Augusta, MT, destroyed, 2 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 19790724020309A](https://openairdocs.org/incident/19790724020309A), Jul 24, 1979: Gulstm AA5A (N9966U), Augusta, MT, Destroyed. Made takeoff at high density altitude & gross wt maximum or higher. Unable to climb. Hit trees.

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