# NTSB CHI75FEP68: Grum Amer AA1, N6543L, Delavan, WI, June 12, 1975

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 12, 1975
- Place: Delavan, WI · DELAVAN, WI
- Location: 42.6302° N, 88.6306° W: Placed by OpenAirDocs: center of Delavan, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.6302&lon=-88.6306&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report November 3, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 149099
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI75FEP68
- Page: https://openairdocs.org/ntsb/CHI75FEP68

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2955  75/6/12    DELAVAN,WI          GRUM AMER AA1       CR-  0  1  0  NONCOMMERCIAL             COMMERCIAL, AGE 58, 1638
        TIME - 1415                    N6543L              PX-  0  1  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 21 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - LAKE LAWN LODGE
        DEPARTURE POINT             INTENDED DESTINATION
          WAUKEGAN,IL                 DELAVAN,WI
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: FINAL APPROACH
           STALL                                                    LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           PILOT IN COMMAND - MISMANAGEMENT OF FUEL
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           MISCELLANEOUS - EVASIVE MANEUVER TO AVOID COLLISION
        FACTOR(S)
           WEATHER - UNFAVORABLE WIND CONDITIONS
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          BROKEN                                                    4500
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  WIND DIRECTION-DEGREES
          NONE                                                     270
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           18                                                      VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- WIND GUSTING 30K.PLT CORRECTED FOR XWIND WITH R WING DWN.LOW FUEL R WING.1 1/3 GAL DRAINED.
```

## Aircraft

- Registration: [N6543L](https://openairdocs.org/deregistered/N6543L-1976-06-03), registration cancelled 1976-06-03, S/N AA1B-0343, built 1974 (OpenAirDocs)
- Reported make and model: GRUM AMER AA1
- 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 Lawn Lodge

## 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 19750612021419A](https://openairdocs.org/incident/19750612021419A), Jun 12, 1975: Grumav AA1B, Delavan, WI, Substantial damage. Wind gusting 30K.plt corrected for xwind with r wing dwn. Low fuel r wing.1 1/3 gal drained.

## Other investigations on N6543L (1)

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.

- [NTSB CHI74DEE60](https://openairdocs.org/ntsb/CHI74DEE60), Mar 10, 1974: Amer Avco AA1-B (N6543L), Sugar Grove, IL, 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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