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FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA
F S M/N PURPOSE
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1-0049 62/7/17 AVALON BAY,CALIF GRUMMAN G-21A CR- 0 0 1 SCHED DOM PASSG SRV AIRLINE TRANSPORT, AGE
TIME - 0930 N324 PX- 0 0 6 40, 9800 TOTAL HOURS,
DAMAGE-SUBSTANTIAL OT- 0 0 0 2600 IN TYPE, INSTRUMENT
RATED.
NAME OF AIRPORT - AVALON BAY SPB
OPERATOR - AVALON AIR TRANSPORT,INC.
DEPARTURE POINT INTENDED DESTINATION
AVALON BAY,CALIF LONG BEACH,CALIF
TYPE OF ACCIDENT PHASE OF OPERATION
PROPELLER/ROTOR FAILURE: PROPELLER TAKEOFF: RUN
PROBABLE CAUSE(S)
POWERPLANT - PROPELLER AND ACCESSORIES: BLADE RETENTION MECHANISM
MISCELLANEOUS ACTS,CONDITIONS - FATIGUE FRACTURE
MISCELLANEOUS ACTS,CONDITIONS - VIBRATION,EXCESSIVE
FACTOR(S)
PERSONNEL - MAINTENANCE,SERVICING,INSPECTION: INADEQUATE MAINTENANCE AND INSPECTION
REMARKS- NR 3 PROP BLADE FAILED IN FATIGUE DUE VIBRATION CAUSED BY ROTATION OF BLADE WITHIN RETENTION CLAMP
