# NTSB MKC77FER15: Mooney M20A, N6077X, Willmar, MN, January 23, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: January 23, 1977
- Place: Willmar, MN · WILLMAR, MN
- Location: 45.1210° N, 95.0587° W: Placed by OpenAirDocs: center of Willmar, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.1210&lon=-95.0587&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report March 10, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 156988
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC77FER15
- Page: https://openairdocs.org/ntsb/MKC77FER15

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0097  77/1/23    WILLMAR,MN          MOONEY M20A         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 36, 90 TOTAL
        TIME - 1650                    N6077X              PX-  0  0  3  PLEASURE/PERSONAL TRANSP  HOURS, 31 IN TYPE, NOT
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - WILLMAR
        DEPARTURE POINT             INTENDED DESTINATION
          OLIVA,MN                    WILLMAR,MN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           AIRFRAME FAILURE: IN FLIGHT                              IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           SYSTEMS - FLIGHT CONTROL SYSTEMS: ELEVATOR AND ELEVATOR TAB CONTROL SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - MISSING
           MISCELLANEOUS ACTS,CONDITIONS - DISCONNECTED
        REMARKS- ATTACHMENT BOLT MISSING FROM ELEVATOR CONTROL.36HOURS SINCE EMPENNAGE MODIFICATION
```

## Aircraft

- Registration: [N6077X](https://openairdocs.org/deregistered/N6077X-1977-08-04), registration cancelled 1977-08-04, S/N 1673 (OpenAirDocs)
- Reported make and model: MOONEY M20A
- Registry model: [Mooney M20A](https://openairdocs.org/model/mooney-m20a) (registry code 5870204) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Willmar

## 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 19770123000779A](https://openairdocs.org/incident/19770123000779A), Jan 23, 1977: Mooney M20D, Willmar, MN, Substantial damage. Attachment bolt missing from elevator control.36HOURS since empennage modification

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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