NTSB CAROL · Event
Event MIA84FA196
Aircraft involved
Factual narrative
THE ACFT CRASHED INTO TREES SHORT OF THE RWY AFTER THE ENGINE QUIT ON FINAL APPROACH. THE ENGINE FAILED FROM INTERNAL FAILURE OF THE CRANKSHAFT GEAR RETENTION SYSTEM. A TEARDOWN REVEALED THAT THE CRANKSHAFT GEAR BOLT HAD BACKED OUT & THE BOLT HEAD WAS NOTED TO HAVE CONTACTED THE OIL PUMP DRIVE TANK. ALSO, THERE WAS EVIDENCE THAT FOREIGN MATERIAL HAD PASSED THRU THE GEAR SYS. THE SOURCE OF THE MATERIAL WAS FROM SEVERELY SPALLED TAPPETS. THE CRANKSHAFT GEAR DOWEL PIN WAS SHEARED. SEVERAL CAMSHAFT LOBES WERE WORN WITH CORRESPONDING TAPPET FACE SPALLING. THE INITIAL SOURCE OF THE FAILURE MODE WAS NOT DETERMINED. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1984_MIA84FA196.txt.
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