# NTSB FTW76FPM18: Amer Avco AA1-B, N9657L, Cookson, OK, April 23, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 23, 1976
- Place: Cookson, OK · COOKSON, OK
- Location: 35.7213° N, 94.9155° W: Placed by OpenAirDocs: center of Cookson, OK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=35.7213&lon=-94.9155&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report May 19, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 152945
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW76FPM18
- Page: https://openairdocs.org/ntsb/FTW76FPM18

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0782  76/4/23    COOKSON,OK          AMER AVCO AA1-B     CR-  0  0  1  INSTRUCTIONAL             STUDENT, AGE 23, 56 TOTAL
        TIME - 0710                    N9657L              PX-  0  0  0  SOLO                      HOURS, ALL IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - LAKE TENKILLER
        DEPARTURE POINT             INTENDED DESTINATION
          COOKSON,OK                  KANSAS CITY,MO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - PREMATURE LIFT-OFF
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - FAILED TO USE ALL AVAILABLE RUNWAY
        REMARKS- MID-FLD TKOF. SETTLED INTO FENCE. UNAUTH SOLO X-C FLT.
```

## Aircraft

- Registration: [N9657L](https://openairdocs.org/aircraft/N9657L), registered now, S/N AA1B-0157 (OpenAirDocs)
- Reported make and model: AMER AVCO AA1-B
- 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: Lake Tenkiller

## 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 19760423008729A](https://openairdocs.org/incident/19760423008729A), Apr 23, 1976: Grumav AA1B, Cookson, OK, Substantial damage. Mid-fld tkof. Settled into fence. Unauth solo x-c flt.

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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