# NTSB FTW78DRD51: Grum Amer AA1B, N9975L, Thibodaux, LA, August 21, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 21, 1978
- Place: Thibodaux, LA · THIBODAUX, LA
- Location: 29.7949° N, 90.8146° W: Placed by OpenAirDocs: center of Thibodaux, LA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.7949&lon=-90.8146&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report September 14, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 139889
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW78DRD51
- Page: https://openairdocs.org/ntsb/FTW78DRD51

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2098  78/8/21    THIBODAUX,LA        GRUM AMER AA1B      CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 20, 17 TOTAL
        TIME - 1130                    N9975L              PX-  0  0  0  TRAINING                  HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - THIBODAUX MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          THIBODAUX,LA                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
           PILOT IN COMMAND - IMPROPER RECOVERY FROM BOUNCED LANDING
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
```

## Aircraft

- Registration: [N9975L](https://openairdocs.org/aircraft/N9975L), registered now, S/N AA1B-0275, built 1973 (OpenAirDocs)
- Reported make and model: GRUM AMER AA1B
- 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: Substantial damage
- Airport: Thibodaux Muni

## 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 19780821029709A](https://openairdocs.org/incident/19780821029709A), Aug 21, 1978: Grumav AA1B, Thibodaux, LA, Substantial damage

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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