# NTSB CHI78FEP69: Cessna 172F, N8312U, Sauk Prairie, WI, September 1, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: September 1, 1978
- Place: Sauk Prairie, WI · SAUK PRAIRIE, WI
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report January 17, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 139333
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI78FEP69
- Page: https://openairdocs.org/ntsb/CHI78FEP69

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3487   78/9/1    SAUK PRAIRIE,WI     CESSNA 172F         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 22, 81 TOTAL
        TIME - 1700                    N8312U              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  HOURS, 7 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - SAUK PRAIRIE
        DEPARTURE POINT             INTENDED DESTINATION
          SAUK PRAIRIE,WI             LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: DESCENDING
           COLLIDED WITH: CROP                                      LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
        FACTOR(S)
           WEATHER - CONDITIONS CONDUCIVE TO CARB./INDUCTION SYSTEM ICING
           TERRAIN - HIGH VEGETATION
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        WEATHER BRIEFING - BRIEFED BY FLIGHT SERVICE PERSONNEL, BY PHONE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          SCATTERED                                                UNLIMITED
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TYPE OF WEATHER CONDITIONS
          NONE                                                     VFR
        TYPE OF FLIGHT PLAN
          NONE
```

## Aircraft

- Registration: [N8312U](https://openairdocs.org/aircraft/N8312U), registered now, S/N 17252212, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 172F
- Registry model: [Cessna 172F](https://openairdocs.org/model/cessna-172f) (registry code 2072414) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Sauk Prairie

## 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 19780901027529A](https://openairdocs.org/incident/19780901027529A), Sep 1, 1978: Cessna 172D, Sauk Prairie, WI, Substantial damage

## Other investigations on N8312U (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 CHI69D0210](https://openairdocs.org/ntsb/CHI69D0210), Aug 10, 1968: Cessna 172 (N8312U), Iron River, MI, 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.

---
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.