NTSB Identification: ATL89LA034.
The docket is stored on NTSB microfiche number 37944.
Accident occurred Thursday, November 17, 1988 in URIAH, AL
Probable Cause Approval Date: 01/08/1990
Aircraft: CESSNA 210B, registration: N5021P
Injuries: 1 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

WHILE CRUISING AT 6500 FT, THE ENG LOST POWER & THE PROP STOPPED WINDMILLING. THE PLT ELECTED TO LAND ON A HIGHWAY. DRG THE LANDING, THE RIGHT WING HIT OVERHANGING TREE LIMBS WHICH YAWED THE ACFT OFF THE RIGHT SIDE OF THE ROAD & DOWN AN EMBANKMENT. THE ENG WAS REMOVED & DISASSEMBLED WHICH REVEALED THE CRANKSHAFT HAD FAILED FROM FATIGUE AT THE #2 CRANK CHEEK. FATIGUE HAD ORIGINATED AT THE FRONT CORNER OF THE #2 CHEEK LIGHTENING HOLE. THE ENG WAS MANUFACTURED IN 1961. IN 1962, THE MANUFACTURER REDESIGNED THE CRANKSHAFT FOR THIS MODEL OF ENG BY ELIMINATING THE LIGHTENING HOLE. IN MAY 1962, CONTINENTAL SVC BULLETIN (SB) M62-8 ADZD OF THE AVAILABILITY OF THE IMPROVED CRANKSHAFT. THE ENG OF N5021P WAS OVERHAULED ON 7/21/75 AT 1486 HRS. AT THAT TIME, THE CRANKSHAFT WAS REMOVED, MAGNAFLUXED & REINSTALLED. TIME SINCE OVERHAUL WAS 695 HRS. TOTAL ENG TIME WAS 2181 HRS.

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

ENGINE ASSEMBLY,CRANKSHAFT..FATIGUE


Contributing Factors

OBJECT..TREE(S)



Contributing Factors

MAINTENANCE,MODIFICATION..NOT PERFORMED

Index for Nov1988 | Index of months