NTSB Identification: DEN85LA036.
The docket is stored on NTSB microfiche number 26513.
Accident occurred Wednesday, December 05, 1984 in RIFLE, CO
Aircraft: BELL 205A-1, registration: N5019N
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.

THE HELICOPTER WAS ON A SEISMIC OPERATION WHEN IT LOST ENG POWER AND WAS SUBSTANTIALLY DAMAGED DURING THE AUTOROTATIVE LANDING. THE PLT STATED THAT WHEN HE CAME BACK ON COLLECTIVE POWER THE ENG WOULD ENTER SEVERE COMPRESSOR STALLS. POST CRASH EXAMINATION OF THE ENG, BOOST PUMPS AND FUEL FAILED TO REVEAL ANY REASON FOR ENG STALL AND SURGE.

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

REASON FOR OCCURRENCE UNDETERMINED

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