# NTSB NYC78FNC09: Mooney M20F, N6850V, Danby, VT, January 11, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 11, 1978
- Place: Danby, VT · DANBY, VT
- Location: 43.3437° N, 72.9947° W: Placed by OpenAirDocs: center of Danby, VT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.3437&lon=-72.9947&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report January 18, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 142580
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC78FNC09
- Page: https://openairdocs.org/ntsb/NYC78FNC09

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3504  78/1/11    DANBY,VT            MOONEY M20F         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 51, 5000
        TIME - 1530                    N6850V              PX-  0  0  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 50 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          RUTLAND,VT                  MITCHELLVILLE,MD
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PERSONNEL - PRODUCTION-DESIGN-PERSONNEL: SUBSTANDARD QUALITY CONTROL
           POWERPLANT - ENGINE STRUCTURE: CRANKSHAFT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        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- CRANKSHAFT FAILED,SUB-SURFACE INGOT PIPING NOT FOUND DURING MANUFACTURING PROCESSES.
```

## Aircraft

- Registration: [N6850V](https://openairdocs.org/aircraft/N6850V), registered now, S/N 22-1243, built 1975 (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 SER A&C](https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (registry code 41511, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## 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 19780111000449A](https://openairdocs.org/incident/19780111000449A), Jan 11, 1978: Mooney M20D, Danby, VT, Substantial damage. Crankshaft failed,sub-surface ingot piping not found during manufring processes.

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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