# NTSB SEA81DYP37: Hughes 369D, N58306, Leavenworth, WA, August 26, 1981

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 26, 1981
- Place: Leavenworth, WA · LEAVENWORTH, WA
- Location: 47.5947° N, 120.6639° W: Placed by OpenAirDocs: center of Leavenworth, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.5947&lon=-120.6639&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 17, 1982
- Report: Brief approved by the director
- NTSB case key (mKey): 123551
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA81DYP37
- Page: https://openairdocs.org/ntsb/SEA81DYP37

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3167  81/8/26  NR.LEAVENWORTH,WA     HUGHES 369D         CR-  0  0  1  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 1020                    N58306              PX-  0  0  0  AERIAL APPLICATION        AGE 45, 9981 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            2010 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         LEAVENWORTH,WA               LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: SWATH RUN
           COLLIDED WITH: TREES                                     LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: IMPROPER MAINTENANCE (MAINTENANCE PERSONNEL)
           POWERPLANT - FUEL SYSTEM: FILTER,FUEL
           MISCELLANEOUS ACTS,CONDITIONS - PINCHED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
         SPECIAL DATA
          TOTAL HOURS IN CROP CONTROL - 4000                       KIND OF OPERATION - SPRAYING FORESTS
          KIND OF CROP - FOREST-TREES                              TYPE OF CHEMICAL USED - LIQUID CHEMICAL-NONTOXIC
          PILOT' S SEAT BELT -FASTENED-PROPERLY                    GLOVES - USED
          GOGGLES - NOT USED                                       CRASH HELMET - AVAILABLE USED
          COCKPIT CRASHPAD - NOT INSTALLED                         CRASH BAR - NOT INSTALLED
          TANK/HOPPER-LOCATION - BELLY                             TERRAIN-TYPE -MOUNTAINOUS
          ELEVATION-AREA BEING TREATED-FEET -  2700                SWATH RUN-HOW FLOWN - WIND CALM
        REMARKS- FOUND CUT O-RING SEAL,PN MS29513-137,IN FUEL FILTER BOWL,PN 02-15325.
```

## Aircraft

- Registration: [N58306](https://openairdocs.org/deregistered/N58306-2013-08-19), registration cancelled 2013-08-19, S/N 100651D, built 1979 (OpenAirDocs)
- Reported make and model: HUGHES 369D
- Registry model: [Hughes Helicopters HUGHES 369D](https://openairdocs.org/model/hughes-helicopters-hughes-369d) (registry code 4470706) (OpenAirDocs)
- Registry engine: [Allison 250 SER 250HP](https://openairdocs.org/engine/allison-250-ser-250hp) (registry code 03002, 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 19810826051679A](https://openairdocs.org/incident/19810826051679A), Aug 26, 1981: Hughes 369D, Leavenworth, WA, Substantial damage. Engine quit on spray run. Autorotated into trees. Low fuel and cut o ring on fuel pump filter allowed air ingestion

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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