NTSB Identification: MKC82FA174
14 CFR Part 91: General Aviation
Accident occurred Friday, September 24, 1982 in SABETHA, KS
Probable Cause Approval Date: 09/24/1983
Aircraft: CESSNA 421A, registration: N2231Q
Injuries: 2 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.

THE PLT STATED THAT THE GEAR INDICATED DOWN AND LOCKED PRIOR TO LANDING AND DURING THE FIRST PART OF THE LANDING ROLL. AFTER ABOUT 1,000 FT OF ROLL THE PLT GOT AN UNSAFE INDICATION AND THE LEFT WING BEGAN TO SETTLE. AFTER THE LEFT GEAR COLLAPSED THE ACFT SWERVED TO THE LEFT OFF THE RWY. THE BOLT, P/N NAS464P4-26, WHICH ATTACHES THE BELLCRANK, PN 5041001-1, TO THE STRUT WAS SHEARED AND ONE SIDE OF THE CLEVIS AT THE LOWER END OF THE BELLCRANK. BOTH OF THESE BROKEN COMPONENTS COULD BE ASSOCIATED WITH OVERLOAD CONDITIONS INDUCED WHEN THE GEAR COLLAPSED AND NEITHER SHOWED EVIDENCE OF PREVIOUS DAMAGE. THERE WAS NO EVIDENCE OF A HARD LANDING. THE LANDING GEAR COMPONENTS APPEARED TO HAVE ADEQUATE LUBRICATION. DUE TO IMPACT DAMAGE THE RIGGING OF THE RETRACTION LINKAGE PRIOR TO THE ACCIDENT COULD NOT BE DETERMINED.

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

REASON FOR OCCURRENCE UNDETERMINED

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