NTSB Identification: LAX82FUJ40
14 CFR Part 91: General Aviation
Accident occurred Wednesday, April 28, 1982 in TEEC NOS POS, AZ
Probable Cause Approval Date: 04/28/1983
Aircraft: HUGHES 369D, registration: N1089S
Injuries: 1 Serious,2 Minor.

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 ACFT LOST ENG POWER & CRASHED WHILE ATTEMPTING AN AUTOROTATION. ENG TEARDOWN REVEALED THAT THE #2 BEARING FAILED AS A RESULT OF SOME OF THE BALL RETAINERS BEING BROKEN & CRACKED BETWEEN THE BALL POCKETS. THIS CONDITION ALLOWED THE IMPELLER ASSEMBLY TO MOVE FORWARD CONTACTING THE DIFFUSER ASSEMBLY RESULTING IN A LOSS OF ENG OPERATING POWER.

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

COMPRESSOR ASSEMBLY..FAILURE,PARTIAL



Contributing Factors

TERRAIN CONDITION..ROUGH/UNEVEN

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