# NTSB UNK64X1471: Mooney MK21, N6808U, Marlboro, MA, April 26, 1964

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: April 26, 1964
- Place: Marlboro, MA · MARLBORO, MA
- Location: 42.3496° N, 71.5472° W: Placed by OpenAirDocs: center of Marlborough, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3496&lon=-71.5472&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report September 15, 1964
- Report: Brief approved by the director
- NTSB case key (mKey): 184409
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=UNK64X1471
- Page: https://openairdocs.org/ntsb/UNK64X1471

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1045  64/4/26    MARLBORO MASS       MOONEY MK21         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 42, 1000
        TIME - 1310                    N6808U              PX-  0  0  3  BUSINESS                  TOTAL HOURS, 71 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MARLBORO
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLIDED WITH: TREES                                     TAKEOFF: ABORTED
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           PILOT IN COMMAND - PREMATURE LIFT-OFF
        FACTOR(S)
           AIRPORTS/AIRWAYS/FACILITIES - AIRPORT CONDITIONS: POORLY MAINTAINED RUNWAY SURFACE
```

## Aircraft

- Registration: [N6808U](https://openairdocs.org/deregistered/N6808U-2017-10-24), registration cancelled 2017-10-24, S/N 2523, built 1963 (OpenAirDocs)
- Reported make and model: MOONEY MK21
- Registry model: [Mooney M20C](https://openairdocs.org/model/mooney-m20c) (registry code 5870208) (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: Marlboro

## Other investigations on N6808U (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 NYC68F0014](https://openairdocs.org/ntsb/NYC68F0014), Jun 4, 1967: Mooney M20C (N6808U), Sharon, PA, 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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