# NTSB SEA77FYG08: Mooney M20F, N9379M, Palouse, WA, November 11, 1976

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 11, 1976
- Place: Palouse, WA · PALOUSE, WA
- Location: 46.9103° N, 117.0752° W: Placed by OpenAirDocs: center of Palouse, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.9103&lon=-117.0752&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 30, 1976
- Report: Brief approved by the director
- NTSB case key (mKey): 156383
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA77FYG08
- Page: https://openairdocs.org/ntsb/SEA77FYG08

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3522  76/11/11   PALOUSE,WA          MOONEY M20F         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 60, 3500
        TIME - 1030                    N9379M              PX-  0  0  0  BUSINESS                  TOTAL HOURS, UNK/NR IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - CASCADE AG STRIP
        DEPARTURE POINT             INTENDED DESTINATION
          PULLMAN,WA                  NORDMAN,ID
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           TERRAIN - ROUGH/UNEVEN
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PROP/ENGINE VIBRATION
                                  SUSPECTED OR KNOWN AIRCRAFT DAMAGE
        REMARKS- AT 8000FT. 6 INCHES OF HARTZELL PROPELLER P/N HC-C2YK-1B SEPARATED. 73HRS SINCE OVERHAUL.
```

## Aircraft

- Registration: [N9379M](https://openairdocs.org/deregistered/N9379M-2013-05-22), registration cancelled 2013-05-22, S/N 670003, built 1966 (OpenAirDocs)
- Reported make and model: MOONEY M20F
- Registry model: [Mooney M20F](https://openairdocs.org/model/mooney-m20f) (registry code 5870214) (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: Cascade Ag Strip

## 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 19761111035439A](https://openairdocs.org/incident/19761111035439A), Nov 11, 1976: Mooney M20F, Palouse, WA, Substantial damage. At 8000FT. 6 inches of hartzell propeller p/n HC-C2YK-1B separated. 73HRS since overhaul.

## Other investigations on N9379M (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 LAX89FA133](https://openairdocs.org/ntsb/LAX89FA133), Mar 26, 1989: Mooney M20F (N9379M), San Andreas, CA, destroyed, 4 fatal. Probable cause: INTERRUPTION OF ENGINE POWER FOR AN UNDETERMINED REASON, AND FAILUE OF THE PILOT TO MAINTAIN AIRSPEED, WHICH RESULTED IN A STALL/SPIN. A FACTOR RELATED TO THE ACCIDENT WAS: LACK OF ALTITUDE TO…

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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