# NTSB CHI71DDJ35: Cessna 172G, N4631L, Hales Corners, WI, February 15, 1971

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: February 15, 1971
- Place: Hales Corners, WI · HALES CORNERS, WI
- Location: 42.9412° N, 88.0495° W: Placed by OpenAirDocs: center of Hales Corners, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.9412&lon=-88.0495&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 3 uninjured
- Status: Completed, report December 9, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 160093
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI71DDJ35
- Page: https://openairdocs.org/ntsb/CHI71DDJ35

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0734  71/2/15    HALES CORNERS,WIS   CESSNA 172G         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 34, 195
        TIME - 1210                    N4631L              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 63 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - HALES CORNERS
        DEPARTURE POINT             INTENDED DESTINATION
          LEWIS LOCKPORT,ILL          HALES CORNERS,WIS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: SNOWBANK                                  LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: ICE/SLUSH ON RUNWAY
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW ON RUNWAY
        REMARKS- NO UNICOM AVBL.HIT SNOWBANK AT END OF 2100FT RWY
```

## Aircraft

- Registration: [N4631L](https://openairdocs.org/aircraft/N4631L), registered now, S/N 17254626 (OpenAirDocs)
- Reported make and model: CESSNA 172G
- Registry model: [Cessna 172G](https://openairdocs.org/model/cessna-172g) (registry code 2072420) (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: Hales Corners

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.