# NTSB MIA77FLA31: Hughes 369HS, N9081F, Bunnell, FL, June 6, 1977

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 6, 1977
- Place: Bunnell, FL · BUNNELL, FL
- Location: 29.4661° N, 81.2578° W: Placed by OpenAirDocs: center of Bunnell, FL, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.4661&lon=-81.2578&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 12, 1978
- Report: Brief approved by the director
- NTSB case key (mKey): 146741
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA77FLA31
- Page: https://openairdocs.org/ntsb/MIA77FLA31

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3738   77/6/6    BUNNELL,FL          HUGHES 369HS        CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 54, 18000
        TIME - 0735                    N9081F              PX-  0  0  1  BUSINESS                  TOTAL HOURS, 2016 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, NOT INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          JACKSONVILLE,FL             SANFORD,FL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           ROTORCRAFT - TRANSMISSION ROTOR DRIVE SYSTEM: ENGINE DRIVE SHAFT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - WET,SOFT GROUND
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- GEAR SHAFT SPUR ADAPTER,P/N 6852090,FAILED-CAUSEUNDETERMINED.
```

## Aircraft

- Registration: [N9081F](https://openairdocs.org/deregistered/N9081F-2013-05-17), registration cancelled 2013-05-17, S/N 310311S, built 1971 (OpenAirDocs)
- Reported make and model: HUGHES 369HS
- Registry model: [Hughes 369HS](https://openairdocs.org/model/hughes-369hs) (registry code 4470728) (OpenAirDocs)
- Registry engine: [Allison 250 SER 317HP](https://openairdocs.org/engine/allison-250-ser-317hp) (registry code 03011, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- 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 19770606016109A](https://openairdocs.org/incident/19770606016109A), Jun 6, 1977: Hughes 369HS, Bunnell, FL, Substantial damage. Gear shaft spur adapter,p/n 6852090,failed-causeundetermined.

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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