# NTSB DEN77FTM13: Grum Amer AA-1B, N9565L, American Fork, UT, April 24, 1977

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: April 24, 1977
- Place: American Fork, UT · AMERICAN FORK, UT
- Location: 40.3779° N, 111.7951° W: Placed by OpenAirDocs: center of American Fork, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.3779&lon=-111.7951&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report May 31, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 152465
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN77FTM13
- Page: https://openairdocs.org/ntsb/DEN77FTM13

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0720  77/4/24    AMERICAN FORK,UT    GRUM AMER AA-1B     CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 20, 208
        TIME - 2000                    N9565L              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 7 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          SALT LAKE CITY,UT           RETURN                       PROVO,UT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: SPIN                                              IN FLIGHT: NORMAL CRUISE
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - AIRCRAFT CAME TO REST IN WATER
        REMARKS- ACFT STALLED IN LEFT TURN.RECOVERY NOT MADE PRIOR TO IMPACT.
```

## Aircraft

- Registration: [N9565L](https://openairdocs.org/deregistered/N9565L-2023-09-09), registration cancelled 2023-09-09, S/N AA1B0655, built 1976 (OpenAirDocs)
- Reported make and model: GRUM AMER AA-1B
- Registry model: [Grumman American Avn. AA-1B](https://openairdocs.org/model/grumman-american-avn-aa-1b) (registry code 3960103) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19770424009719A](https://openairdocs.org/incident/19770424009719A), Apr 24, 1977: Grumav AA1B, American Fork, UT, Substantial damage. Acft stalled in left turn. Recovery not made prior to impact.

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.

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