# NTSB UNK79X0113: Grum-Amer AA-5, N7104L, Au Gres, MI, July 15, 1979

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 15, 1979
- Place: Au Gres, MI · AU GRES, MI
- Location: 44.0442° N, 83.6934° W: Placed by OpenAirDocs: center of Au Gres, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.0442&lon=-83.6934&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 2 uninjured
- Status: Completed, report September 6, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 135242
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK79X0113
- Page: https://openairdocs.org/ntsb/UNK79X0113

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1726  79/7/15    AU GRES,MI          GRUM-AMER AA-5      CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 52, 600
        TIME - 2120                    N7104L              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 102 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - AU GRES
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          MACKINAC IS,MI              FLUSHING,MI                  AU GRES,MI
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: DITCHES                                   TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - MISUSED OR FAILED TO USE FLAPS
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - DOWNWIND
         FIRE AFTER IMPACT
        REMARKS- FULL FLAP TKOF.2200 FT RWY.
```

## Aircraft

- Registration: [N7104L](https://openairdocs.org/deregistered/N7104L-2013-05-03), registration cancelled 2013-05-03, S/N AA5-0404, built 1973 (OpenAirDocs)
- Reported make and model: GRUM-AMER AA-5
- Registry model: [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5) (registry code 3960104) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Au Gres

## 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 19790715018069A](https://openairdocs.org/incident/19790715018069A), Jul 15, 1979: Gulstm AA5, Au Gres, MI, Destroyed. Attempted downwind takeoff on rough,soft,short field. Flaps down. Aborted t/o 50FT. In air. Landed, ran off rwy.

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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