NTSB Identification: MIA87FA013.
The docket is stored on NTSB microfiche number 32540.
Scheduled 14 CFR
Accident occurred Tuesday, October 28, 1986 in ST. CROIX
Aircraft: GRUMMAN G-73, registration: N604SS
Injuries: 1 Fatal,5 Serious,9 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 PLTS LOST AILERON CONTROL SHORTLY AFTER TAKEOFF WHILE IN A LEFT TURN. THE LEFT TURNING TENDENCIES OF THE ACFT COULD NOT BE CORRECTED AND THE ACFT CRASH LANDED IN THE CARRIBEAN SEA. POST CRASH INSPECTION OF THE ACFT REVEALED THE LEFT AILERON CONTROL CABLE WAS TRAPPED WITHIN A BUNDLE OF ELECTRICAL WIRES AND CABLES. THIS OCCURRED WHEN AN ELECTRICAL CABLE FROM A REVERSE CURRENT RELAY IN THE RIGHT WING TO THE MAIN JUNCTION BOX IN THE LEFT CABIN AREA AT THE CENTER WING WAS CHANGED AND SECURED. THE AILERON CABLE CHAFED THROUGH THE PROTECTIVE COVER OF THE LARGE ELECTRICAL CABLE. WHEN CONTACT WAS MADE WITH THE METAL ELECTRICAL CABLE THE AILERON CABLE ARCHED AT SEVERAL POINTS AND SEPARATED AT TWO DIFFERENT POINTS CAUSING A LOSS OF AILERON CONTROL.

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

ELECTRICAL SYSTEM,ELECTRIC WIRING..INCORRECT

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

AIRCRAFT HANDLING..NOT POSSIBLE..PILOT IN COMMAND

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

MAINTENANCE,SERVICE OF AIRCRAFT/EQUIPMENT..IMPROPER..COMPANY MAINTENANCE PERSONNEL

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

ELECTRICAL SYSTEM,ELECTRIC WIRING..CHAFED

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

ELECTRICAL SYSTEM,ELECTRIC WIRING..ARCING

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

FLT CONTROL SYST,AILERON CONTROL..SEPARATION

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

FLT CONTROL SYST,AILERON CONTROL..LOSS,TOTAL

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