# NTSB CHI81FEP30: Cessna 172I, N35491, Oconomowoc, WI, July 4, 1981

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 4, 1981
- Place: Oconomowoc, WI · OCONOMOWOC, WI
- Location: 43.1010° N, 88.4951° W: Placed by OpenAirDocs: center of Oconomowoc, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.1010&lon=-88.4951&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 3 minor, 2 uninjured
- Status: Completed, report September 30, 1981
- Report: Brief approved by the director
- NTSB case key (mKey): 124581
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI81FEP30
- Page: https://openairdocs.org/ntsb/CHI81FEP30

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1926   81/7/4    OCONOMOWOC,WI       CESSNA 172I         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 50, 183
        TIME - 1400                    N35491              PX-  0  0  4  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 152 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PRIVATE
        DEPARTURE POINT             INTENDED DESTINATION
          OCONOMOWOC,WI               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            TAKEOFF: INITIAL CLIMB
           COLLIDED WITH: TREES                                     LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           MISCELLANEOUS ACTS,CONDITIONS - FUEL GRADE-IMPROPER
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         FIRE AFTER IMPACT
        REMARKS- FUEL HAD MOTOR OCTANE RATING OF 81.
```

## Aircraft

- Registration: [N35491](https://openairdocs.org/deregistered/N35491-1981-12-18), registration cancelled 1981-12-18, S/N 17256798, built 1968 (OpenAirDocs)
- Reported make and model: CESSNA 172I
- Registry model: [Cessna 172I](https://openairdocs.org/model/cessna-172i) (registry code 2072426) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Private

## 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 19810704045539A](https://openairdocs.org/incident/19810704045539A), Jul 4, 1981: Cessna 172I, Oconomowoc, WI, Destroyed. Aircraft crashed into brush at end of runway during attempted takeoff.

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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