# NTSB CHI77DEP46: Grum Amer AA1B, N9698L, Waunakee, WI, July 25, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: July 25, 1977
- Place: Waunakee, WI · WAUNAKEE, WI
- Location: 43.1816° N, 89.4416° W: Placed by OpenAirDocs: center of Waunakee, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.1816&lon=-89.4416&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 9, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 145836
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77DEP46
- Page: https://openairdocs.org/ntsb/CHI77DEP46

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2690  77/7/25    WAUNAKEE,WI         GRUM AMER AA1B      CR-  0  0  2  INSTRUCTIONAL             COMMERCIAL, FL.INSTR.,
        TIME - 2025                    N9698L              PX-  0  0  0  DUAL                      AGE 21, 340 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            15 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - WAUNAKEE
        DEPARTURE POINT             INTENDED DESTINATION
          WAUNAKEE,WI                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - MISMANAGEMENT OF FUEL
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- TKOF ON EMPTY.TANKS NOT SWITCHED AFTR TKOF.
```

## Aircraft

- Registration: [N9698L](https://openairdocs.org/aircraft/N9698L), registered now, S/N AA1B-0398 (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: Waunakee

## 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 19770725025419A](https://openairdocs.org/incident/19770725025419A), Jul 25, 1977: Grumav AA1B, Waunakee, WI, Substantial damage. Tkof on empty. Tanks not switched aftr tkof.

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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