# NTSB CHI77FEP53: Pietenpol GN1, N83951, Wis.Rapids, WI, August 8, 1977

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: August 8, 1977
- Place: Wis.Rapids, WI · WIS.RAPIDS, WI
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report November 18, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 145893
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI77FEP53
- Page: https://openairdocs.org/ntsb/CHI77FEP53

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2637   77/8/8    WIS.RAPIDS,WI       PIETENPOL GN1       CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 48, 278
        TIME - 1245                    N83951              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 21 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ALEXANDER FIELD
        DEPARTURE POINT             INTENDED DESTINATION
          WIS.RAPIDS,WI               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
           MISCELLANEOUS ACTS,CONDITIONS - DISREGARD OF GOOD OPERATING PRACTICE
        REMARKS- PILOT HAD FLOWN 1HR IN LAST SIX YRS.ENG TACH AND A/C AIRSPEED INDICATOR WERE MALFUNCTIONING.
```

## Aircraft

- Registration: [N83951](https://openairdocs.org/deregistered/N83951-1977-11-29), registration cancelled 1977-11-29, S/N PR-1, built 1977 (OpenAirDocs)
- Reported make and model: PIETENPOL GN1
- Registry model: [Pietenpol GN-1](https://openairdocs.org/model/pietenpol-gn-1) (registry code 70401RZ) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Alexander Field

## 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 19770808031629A](https://openairdocs.org/incident/19770808031629A), Aug 8, 1977: Kinner SPORTSTERK, Wis.Rapids, WI, Substantial damage. Pilot had flown 1HR in last six yrs. Eng tach and a/c airspeed indicator were malfunctioning.

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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