# NTSB SEA66D0203: Piper PA-18, N3684Z, Billings, MT, December 26, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 26, 1965
- Place: Billings, MT · BILLINGS, MT
- Location: 45.7833° N, 108.5007° W: Placed by OpenAirDocs: center of Billings, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.7833&lon=-108.5007&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report March 8, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 174338
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA66D0203
- Page: https://openairdocs.org/ntsb/SEA66D0203

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3831  65/12/26 NR.BILLINGS MONT      PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 33, 7330
        TIME - 0900                    N3684Z              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 2000 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           MISCELLANEOUS ACTS,CONDITIONS - ICE-CARBURETOR
           MISCELLANEOUS ACTS,CONDITIONS - ANTI-ICING/DEICING EQUIPMENT-IMPROPER OPERATION OF/OR FAILED TO USE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- SKI-EQUIPPED
```

## Aircraft

- Registration: [N3684Z](https://openairdocs.org/aircraft/N3684Z), registered now, S/N 18-7416, built 1960 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N3684Z (3)

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 ANC98LA077](https://openairdocs.org/ntsb/ANC98LA077), Jun 18, 1998: Piper PA-18-160 (N3684Z), Anchorage, AK, substantial damage. Probable cause: The pilot's failure to correct engine/propeller torque and P factor, and the subsequent loss of directional control during the takeoff roll. Factors associated with the accident are the narrow,…
- [NTSB ANC85LA106](https://openairdocs.org/ntsb/ANC85LA106), Jun 21, 1985: Piper PA-18 (N3684Z), King Salmon, AK, substantial damage
- [NTSB SEA67D0076](https://openairdocs.org/ntsb/SEA67D0076), May 27, 1966: Piper PA-18 (N3684Z), Billings, MT, 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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