# NTSB SEA75FTA14: Piper PA-18, N8109Y, Hardin, MT, December 4, 1974

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: December 4, 1974
- Place: Hardin, MT · HARDIN, MT
- Location: 45.7423° N, 107.6083° W: Placed by OpenAirDocs: center of Hardin, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.7423&lon=-107.6083&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 18, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 146455
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA75FTA14
- Page: https://openairdocs.org/ntsb/SEA75FTA14

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4294   74/12/4   HARDIN,MONT         PIPER PA-18         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 31, 2070
        TIME - 1700                    N8109Y              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 600 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - HARDIN AIRPARK
        DEPARTURE POINT             INTENDED DESTINATION
          HARDIN,MONT                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           COLLIDED WITH: DITCHES                                   LANDING: ROLL
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: BRAKING SYSTEM (NORMAL SYSTEM)
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER CLEARANCE-TOLERANCE
           MISCELLANEOUS ACTS,CONDITIONS - WRONG PART
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
        REMARKS- R BRAKE LINING WORN,NO BRAKING.L BRAKE LINING TOO SENSITIVE,WRONG MFR LINING INSTALLED.
```

## Aircraft

- Registration: [N8109Y](https://openairdocs.org/aircraft/N8109Y), registered now, S/N 18-8591 (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 O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Hardin Airpark

## Other investigations on N8109Y (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 SEA96LA189](https://openairdocs.org/ntsb/SEA96LA189), Aug 13, 1996: Piper PA-18 (N8109Y), Ephrata, WA, substantial damage. Probable cause: failure of the pilot to maintain proper alignment with the landing area (driveway) during the landing. Factors relating to the accident were: the selection of an unsuitable area for landing, the…
- [NTSB SEA71DDA11](https://openairdocs.org/ntsb/SEA71DDA11), Dec 4, 1970: Piper PA-18 (N8109Y), Garryowen, MT, substantial damage
- [NTSB DEN69D0081](https://openairdocs.org/ntsb/DEN69D0081), Aug 27, 1968: Piper PA-18 (N8109Y), Buffalo, WY, 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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