NTSB Identification: LAX85FA373.
The docket is stored on NTSB microfiche number 30434.
Scheduled 14 CFR
Accident occurred Tuesday, August 27, 1985 in FRESNO, CA
Aircraft: SWEARINGEN SA226TC METRO II, registration: N139WW
Injuries: 4 Minor,13 Uninjured.

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.

WHILE IN CRUISE FLIGHT AT 16,000 FEET ONE OF THE THREE PROPELLER BLADES SEPARATED AT THE SHANK. THE UNBALANCED CONDITION TWISTED THE ENG FROM ITS MOUNTS AND INTO THE FUSELAGE. THE CABIN WAS PUNCTURED AND RAPID DECOMPRESSION FOLLOWED. THE CREW WAS ABLE TO CONTROL THE ACFT AND LAND WITHOUT FURTHER DAMAGE.

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

PROPELLER SYSTEM/ACCESSORIES,BLADE..BINDING(MECHANICAL)

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

MAINTENANCE,INSPECTION..NOT PERFORMED..CHECK PILOT

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

PROPELLER SYSTEM/ACCESSORIES,BLADE..FATIGUE

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