# NTSB CHI71AC012: Cessna 402, N8139F, Watertown, WI, August 8, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: August 8, 1970
- Place: Watertown, WI · WATERTOWN, WI
- Location: 43.1894° N, 88.7289° W: Placed by OpenAirDocs: center of Watertown, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.1894&lon=-88.7289&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 8 serious, 1 minor
- Status: Completed, report February 19, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 113534
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI71AC012
- Page: https://openairdocs.org/ntsb/CHI71AC012

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2025   70/8/8    WATERTOWN,WIS       CESSNA 402          CR-  0  1  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1940                    N8139F              PX-  0  7  1  AIR TAXI-PASSG            AGE 30, 3734 TOTAL HOURS,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            16 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - WATERTOWN
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          KENORA,CANADA               MILWAUKEE,WIS                INTL FALLS,MINN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: GO-AROUND
           WHEELS-UP                                                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 - MISCALCULATED FUEL CONSUMPTION
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
           MISCELLANEOUS ACTS,CONDITIONS - INTENTIONAL WHEELS-UP
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - RUNWAY CLOSED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
                                  LOW ON FUEL
        REMARKS- LNDD INL,CUSTOMS CLNC,DID NOT REFUEL.ETA MWC 2030,FUEL EXHAUSTED 37MI W AT 2040.APCH TO CLOSED RWY
```

## Aircraft

- Registration: [N8139F](https://openairdocs.org/deregistered/N8139F-1971-10-29), registration cancelled 1971-10-29, S/N 402-0233, built 1968 (OpenAirDocs)
- Reported make and model: CESSNA 402
- Registry model: [Cessna 402](https://openairdocs.org/model/cessna-402) (registry code 207590K) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Destroyed
- Airport: Watertown

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.