NTSB Identification: SEA85LYA01.
The docket is stored on NTSB microfiche number 27956.
Accident occurred Sunday, August 04, 1985 in CALDWELL, ID
Aircraft: Rockwell S2R, registration: N5511X
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.

AN AERO COMMANDER S2R HAD BEEN MODIFIED BY THE INSTALLATION OF AN AIR RESEARCH TPE-331-43A POWER PLANT. DURING AN AERIAL APPLICATION FLIGHT THE PILOT HEARD A LOUD BANG AND EXPERIENCED A LOSS OF POWER. INVESTIGATION REVEALED THE FIRST STAGE TURBINE WHEE, PART #867569-4 HAD DISINTEGRATED.

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

TURBINE ASSEMBLY,TURBINE WHEEL..DISINTEGRATED

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