Indonesia AirAsia QZ8501
Printed page 66. PDF page 68.
Those cracks could generate loss of electrical continuity and lead to a TLU failure. Thermal cycles associated to powered/not-powered conditions and ground/flight conditions, generate fatigue phenomenon of the soldering, and may result in soldering cracking. Soldering cOpen official document at PDF page 68Aircraft Accident Investigation Report: PT. Indonesia Air Asia, Airbus A320-216, PK-AXC, 28 December 2014