EASA AD CF-2023-53
Electrical Power — Transformer Rectifier Unit (TRU) Fan Inoperative
Canadian Airworthiness Directive CF-2023-53 addresses an electrical power issue related to the Transformer Rectifier Unit (TRU) fan on Bombardier Inc. model BD-700-2A12 aircraft, serial numbers 70006 through 70166. The directive mandates corrective action to prevent overheating and potential cascading failures of TRUs. This AD ensures improved safety by requiring replacement of a specific TRU unit with an updated version that includes a corrected fan and monitoring circuit.