FAA 2024-06-08

Requires testing the overheat detection sensing elements of the bleed air leak detection system, marking each serviceable sensing element with a witness mark, and replacing each non-serviceable part with a serviceable one. Also requires maintenance records verification and, if an affected part is installed, prohibits the use of certain MMEL items under certain conditions by requiring revising the operator's MEL. Prompted by reports from the supplier that some overheat detection sensing elements were manufactured with insufficient salt fill, which can result in an inability to detect hot bleed air leaks.