# NTSB CHI71FDJ40: Piper PA-28R, N4970S, Milwaukee, WI, February 2, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: February 2, 1971
- Place: Milwaukee, WI · MILWAUKEE, WI
- Location: 43.0389° N, 87.9065° W: Placed by OpenAirDocs: center of Milwaukee, WI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0389&lon=-87.9065&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report November 1, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 160039
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI71FDJ40
- Page: https://openairdocs.org/ntsb/CHI71FDJ40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0263   71/2/2    MILWAUKEE,WIS       PIPER PA-28R        CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 23, 108
        TIME - 1902                    N4970S              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 11 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - TIMMERMAN
        DEPARTURE POINT             INTENDED DESTINATION
          RICE LAKE,WIS               MILWAUKEE,WIS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: SNOWBANK                                  LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW ON RUNWAY
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: SNOW WINDROWS
        FACTOR(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
        REMARKS- WHEN EXAMINED R WHEEL TURNED FREELY,ACCUMULATION OF FROZEN SLUSH FOUND IN WHEEL HUB AND BRAKE.
```

## Aircraft

- Registration: [N4970S](https://openairdocs.org/aircraft/N4970S), registered now, S/N 28R-35690 (OpenAirDocs)
- Reported make and model: PIPER PA-28R
- Registry model: [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200) (registry code 7102811) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Timmerman

## Other investigations on N4970S (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 MKC76FCD02](https://openairdocs.org/ntsb/MKC76FCD02), Jul 17, 1975: Piper PA-28R (N4970S), Council Bluffs, IA, 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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