# NTSB CHI74FEC27: Piper PA-31, N366BC, Pontiac, MI, January 9, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 9, 1974
- Place: Pontiac, MI · PONTIAC, MI
- Location: 42.6492° N, 83.2874° W: Placed by OpenAirDocs: center of Pontiac, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.6492&lon=-83.2874&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 18, 1974
- Report: Brief approved by the director
- NTSB case key (mKey): 186855
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI74FEC27
- Page: https://openairdocs.org/ntsb/CHI74FEC27

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0466   74/1/9    PONTIAC,MICH        PIPER PA-31         CR-  0  0  2  COMMERCIAL                AIRLINE TRANSPORT, AGE
        TIME - 0654                    N366BC              PX-  0  0  0  AIR TAXI-PASSG            31, 6050 TOTAL HOURS, 500
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - OAKLAND-PONTIAC
        DEPARTURE POINT             INTENDED DESTINATION
          DETROIT,MICH                PONTIAC,MICH
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER LEVEL OFF
           PILOT IN COMMAND - FAILED TO USE OR INCORRECTLY USED MISC.EQUIPMENT
           SYSTEMS - ANTI-ICING,DE-ICING SYSTEMS: WING ANTI-ICING,DE-ICING SYSTEMS
           SYSTEMS - ANTI-ICING,DE-ICING SYSTEMS: EMPENNAGE ANTI-ICING,DE-ICING SYSTEMS
           MISCELLANEOUS ACTS,CONDITIONS - AIRFRAME ICE
        FACTOR(S)
           WEATHER - ICING CONDITIONS-INCLUDES SLEET,FREEZING RAIN,ETC.
        WEATHER BRIEFING - SELF-HELP,PILOT CHECKED WEATHER DATA
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  1000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      20
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      IFR
        REMARKS- LOSS OF PITCH CONTROL DUE AIRFRAME ICE,PARTIALLY STBLZD OSCILLATIONS BY INTERMITTENT POWER USE.
```

## Aircraft

- Registration: [N366BC](https://openairdocs.org/deregistered/N366BC-2012-09-20), registration cancelled 2012-09-20, S/N 31-694, built 1970 (OpenAirDocs)
- Reported make and model: PIPER PA-31
- Registry model: [Piper PA-31-310](https://openairdocs.org/model/piper-pa-31-310) (registry code 7103102) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Oakland-Pontiac

## 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 19740109000409A](https://openairdocs.org/incident/19740109000409A), Jan 9, 1974: Piper PA31, Pontiac, MI, Substantial damage. Loss of pitch control due airframe ice,partially stblzd oscillations by intermittent power use.

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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