NTSB Identification: LAX83FJA02
14 CFR Part 91: General Aviation
Accident occurred Tuesday, November 16, 1982 in HONOLULU, HI
Probable Cause Approval Date: 11/16/1983
Aircraft: PIPER PA-28-140, registration: N56351
Injuries: 1 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 ENG QUIT & THE PLT DITCHED IN THE OCEAN NEAR THE BEACH. THE #4 CONNECTING ROD SHANK WAS FOUND BROKEN AT THE CRANKPIN BEARING HOUSING. ONE ROD BOLT HEAD WAS BROKEN OFF & THE BOLT GRIP WAS NECKED DOWN. THE NUT ON THIS BOLT WAS STILL ON THE BOLT & FLUSH WITH THE THREADED END OF THE BOLT. THE OTHER BOLT & NUT WERE STILL ATTACHED TO THE CRANKPIN BEARING HOUSING HALVES WITH APPROXIMATELY THREE THREADS SHOWING BEYOND THE NUT. THE FOLLOWING TORQUE READINGS WERE NOTED ON THE CONROD BOLTS: #1 ROD UPPER & LOWER BOLTS - 660 INCH POUNDS; #2 ROD UPPER BOLT - 250 INCH POUNDS; #2 ROD LOWER BOLT - 300 INCH POUNDS; #3 ROD UPPER & LOWER BOLTS - 0 INCH POUNDS. REQUIRED TORQUE ON THESE BOLTS IS 480 INCH POUNDS.

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

ENGINE ASSEMBLY,CONNECTING ROD..UNDERTORQUED

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

ENGINE ASSEMBLY,CONNECTING ROD..LOOSE

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

ENGINE ASSEMBLY,CONNECTING ROD..UNDERTORQUED

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

MAINTENANCE,OVERHAUL..IMPROPER..OTHER MAINTENANCE PERSONNEL

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