NTSB Identification: SEA87FA194.
The docket is stored on NTSB microfiche number 35026.
Accident occurred Sunday, September 27, 1987 in SEATTLE, WA
Probable Cause Approval Date: 01/25/1989
Aircraft: HUGHES 369D, registration: N8613F
Injuries: 1 Minor,3 Uninjured.
NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.
THE PLT RPRTD THAT WHILE HE WAS IN CRUISE FLIGHT AT ABOUT 1000', THE ENG LOST POWER. HE INITIATED AN AUTOROTATION TO AN ATHLETIC FIELD IN A CITY PARK. DRG HIS APCH, HE CHANGED HIS PLANNED TOUCHDOWN POINT SVRL TIMES DUE TO PERSONNEL ON THE FIELD. HE SAID THAT THIS RESULTED IN A LOSS OF AIRSPEED, & SUBSEQUENTLY, THE HELICOPTER LANDED HARD. DRG TOUCHDOWN, THE MAIN ROTOR BLADES FLEXED DOWNWARD & SEVERED THE TAIL BOOM. AN EXAM OF THE ENG REVEALED NO EVIDENCE OF A MECHANICAL MALFUNCTION THAT WOULD HAVE RESULTED IN A LOSS OF POWER.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:REASON FOR OCCURRENCE UNDETERMINED
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