NTSB Identification: SEA87LA109.
The docket is stored on NTSB microfiche number 34603.
Accident occurred Wednesday, June 03, 1987 in VANCOUVER, WA
Probable Cause Approval Date: 11/29/1988
Aircraft: HUGHES 269C, registration: N9606F
Injuries: 2 Minor.

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

DURING A PRACTICE RUN-ON LANDING THE AIRCRAFT STARTED TO VIBRATE VIOLENTLY AND AN ALMOST SIMULTANEOUS FIRE OCCURRED. BOTH PILOTS AND AN EYEWITNESS STATED THAT THE RUN ON LANDING WAS VERY SMOOTH. BOTH PILOTS STATED THAT SOMETHING MECHANICAL LET LOOSE DURING THE LANDING. SINCE THE DESTRUCTION OF THE AIRCRAFT BY THE FIRE WAS SO SEVERE, EXAMINATION AND METALLURGICAL ANALYSIS WAS NOT CONCLUSIVE.

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

ROTOR SYSTEM..VIBRATION

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

REASON FOR OCCURRENCE UNDETERMINED

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