# NTSB ANC77FA086: Hughes 369HS, N9138F, Cantwell, AK, September 2, 1977

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: September 2, 1977
- Place: Cantwell, AK · CANTWELL, AK
- Location: 63.3917° N, 148.9508° W: Placed by OpenAirDocs: center of Cantwell, AK, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=63.3917&lon=-148.9508&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report November 16, 1977
- Report: Brief approved by the director
- NTSB case key (mKey): 145362
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC77FA086
- Page: https://openairdocs.org/ntsb/ANC77FA086

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3115   77/9/2  NR.CANTWELL,AK        HUGHES 369HS        CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 29, 3617
        TIME - 1030                    N9138F              PX-  0  0  0  FERRY                     TOTAL HOURS, 1185 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          FIELD SITE                  CANTWELL,AK
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ROLL OVER                                                LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           PILOT IN COMMAND - IMPROPER OPERATION OF POWERPLANT & POWERPLANT CONTROLS
           MISCELLANEOUS ACTS,CONDITIONS - IMPROPER EMERGENCY PROCEDURES
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- ROTOR & ENG RPM WENT TO 110% DRG FLT FOR REASONS UNDETERMINED.
```

## Aircraft

- Registration: [N9138F](https://openairdocs.org/deregistered/N9138F-2015-05-15), registration cancelled 2015-05-15, S/N 330458S, built 1973 (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 400HP](https://openairdocs.org/engine/allison-250-ser-400hp) (registry code 03013, 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 19770902034729A](https://openairdocs.org/incident/19770902034729A), Sep 2, 1977: Hughes 369HS, Cantwell, AK, Substantial damage. Rotor & eng RPM went to 110 drg flt for reasons undetermined.

## Other investigations on N9138F (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 FTW90LA095](https://openairdocs.org/ntsb/FTW90LA095), Apr 15, 1990: Hughes 369HS (N9138F), Junction, TX, substantial damage. Probable cause: THE PILOT IN COMMAND'S INADEQUATE EXECUTION OF THE AUTOROTATION FOLLOWING A ENGINE FAILURE WHICH RESULTED FROM HIS FAILURE TO REFUEL THE AIRCRAFT WITH THE PROPER GRADE OF FUEL WHEN HE RAN SHORT…

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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