# NTSB CHI72FEP24: Mitsubishi MU2B20, N304L, East Troy, WI, December 11, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 11, 1971
- Place: East Troy, WI · EAST TROY, WI
- Location: 42.7852° N, 88.3956° W: Placed by OpenAirDocs: center of East Troy, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.7852&lon=-88.3956&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report August 25, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164768
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI72FEP24
- Page: https://openairdocs.org/ntsb/CHI72FEP24

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4527  71/12/11   EAST TROY,WIS       MITSUBISHI MU2B20   CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 57, 15958
        TIME - 1515                    N304L               PX-  0  0  0  BUSINESS                  TOTAL HOURS, 764 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - EAST TROY MUNI
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          CLINTONVILLE,WIS            EAST TROY,WIS                WATERTOWN,WIS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: FINAL APPROACH
           COLLISION WITH GROUND/WATER: CONTROLLED                  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 - FUEL EXHAUSTION
        FACTOR(S)
           POWERPLANT - POWERPLANT-INSTRUMENTS: FUEL QUANTITY GAUGE
           MISCELLANEOUS ACTS,CONDITIONS - FAILURE OF TWO OR MORE ENGINES
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-2 ENGINES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- FUEL QUANTITY GAUGE & LOW FUEL QUANTITY WARNING LT OUT OF ADJUSTMENT,INDCD 27-29GAL REMAINING.
```

## Aircraft

- Registration: [N304L](https://openairdocs.org/deregistered/N304L-1979-10-12), registration cancelled 1979-10-12, S/N 137, built 1968 (OpenAirDocs)
- Reported make and model: MITSUBISHI MU2B20
- Registry model: [Mitsubishi MU-2B-20](https://openairdocs.org/model/mitsubishi-mu-2b-20) (registry code 5780407) (OpenAirDocs)
- Category: Airplane
- Engines: turbo prop
- Damage: Substantial damage
- Airport: East Troy Muni

## Other investigations on N304L (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 MIA77FKJ08](https://openairdocs.org/ntsb/MIA77FKJ08), Dec 3, 1976: Mitsubishi MU-2B (N304L), Gadsden, AL, 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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