NTSB Identification: SEA84LA096.
The docket is stored on NTSB microfiche number 24792.
Accident occurred Saturday, April 28, 1984 in TOUTLE, WA
Aircraft: HUGHES 369D, registration: N779FA
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

PLT WAS OPERATING HELICOPTER AT 120 FT AGL WITH THE AUX FUEL PUMP ON WHEN A TTL LOSS OF PWR OCCURRED. AUTOROTATION WAS ENTERED BUT A HARD LANDING RESULTED IN THE MAIN ROTOR BLADES CUTTING OFF THE TAIL BOOM. INVESTIGATION REVEALED A FUEL SAMPLE TAKEN FROM THE ENGINE FUEL PUMP FILTER CHAMBER CONTAINED SEVERAL DIFFERENT TYPES OF CONTAMINTATION PARTICLES. SOME OF WHICH WERE FROM A DETERIORATING FUEL PUMP BUSHING.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FUEL SYSTEM..CONTAMINATION



Contributing Factors

ALTITUDE..INADEQUATE..PILOT IN COMMAND


Contributing Factors

FUEL SYSTEM,PUMP..DETERIORATED

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