NTSB Identification: LAX84FA415.
The docket is stored on NTSB microfiche number 25757.
Scheduled 14 CFR
Accident occurred Saturday, July 21, 1984 in TAU, American Samoa
Aircraft: de Havilland DHC-6-300, registration: N43SP
Injuries: 1 Fatal,7 Serious,8 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.
THE ACFT CRASH LANDED AFTER THE PLT USED FLAPS AND POWER TO SEMI-CONTROL PITCH AFTER THE ELEVATOR DOWN CONTROL CABLE FAILED AT ABOUT 300 FT AGL ON FINAL APPROACH. THE LEFT WING OF THE ACFT HIT THE TERMINAL ROOF DURING THE STALL MUSH FROM50 FT AGL. THE COMPANY IS CHANGING THEIR ACFT CONTROL CABLES FROM STEEL TO STAINLESS STEEL TO AID IN THE ANTI-CORROSION AND MODIFYING THEIR INSPECTION PERIOD FROM 800 TO 100 HOURS BETWEEN INSPECTIONS. THE CABLE THAT SEPARATED FAILED FROM CORROSION. NO EVIDENCE OF FATIGUE CRACKING OR MECHANICAL WEAR WAS FOUND. CORROSION PRODUCTS WERE FOUND WITHIN 2 INCHES OF THE SERAPATION ON BOTH CABLE PIECES.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:FLT CONTROL SYST,ELEVATOR CONTROL..CORRODED
The National Transportation Safety Board determines the probable cause(s) of this accident to be:FLT CONTROL SYST,ELEVATOR CONTROL..FAILURE,TOTAL
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