NTSB Identification: LAX86FVA15.
The docket is stored on NTSB microfiche number 33863.
Accident occurred Saturday, August 23, 1986 in PORTERVILLE, CA
Probable Cause Approval Date: 01/25/1988
Aircraft: I.C.A. BRASOV IS-28M2, registration: N9023B
Injuries: 1 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.

DURING INITIAL CLIMB, SHORTLY AFTER TAKEOFF, THE PILOT HEARD A LOUD WHIR THEN A BOOM SOUND. THE AIRCRAFT STARTED VIBRATING SO THE PILOT SHUT DOWN THE ENGINE. HAVING GAINED 200 TO 300 FEET OF ALT THE PILOT INITIATED A LEFT 180 DEG TURN TO ATTEMPT A FORCED LANDING ON THE RUNWAY. THE PILOT ROLLED THE ACFT WINGS LEVEL AND WAS FOUR TO SIX FEET AGL WHEN THE AIRCRAFT STALLED AND COLLIDED WITH THE RUNWAY. THE INVESTIGATION REVEALED ONE OF THE THREE WOODED PROPELLER BLADES HAD SEPARATED FROM THE HUB FOR UNDETERMINED REASONS.

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

PROPELLER SYSTEM/ACCESSORIES,BLADE..SEPARATION


Contributing Factors

TERRAIN CONDITION..RUNWAY

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