Abstract :
Wing body overheat detection system is a system that detects overheat in the
wing body. The detection system is an electrical detection system that responds to
overheating by activating warning light. If there is a damage to the system it will affect
the work of the system itself and the system that is directly related to the wing body
overheat detection system. Sriwijaya Air Boeing 737-500 aircraft experienced wing
body overheat. the problem that occurs is that before the hot air in the pipe (air duct)
is flowed, the warning light for the wing body overheat is on.
The problem is solved by a troubleshooting process that refers to the AMM
Boeing 737-500 chapter 26-18-00 and the fault tree analysis (FTA) method is used to
identify the possibilities that cause the failure of the wing body overheating detection
system on the Sriwijaya Air Boeing 737- 500.
The results of the troubleshooting that caused the failure of the Boeing 737-500
aircraft in the form of the sensing element was damaged resulting in a short loop or a
short loop and sensing must be replaced. By analyzing the possible causes of failure of
the wing body overheat detection system using the FTA method, it was found that the
cause that triggered the wing body overheating on the aircraft was the release of the
mounting clip on the sensing element so that the sensing element touched the fuselage.