Federal Aviation Administration February 14, 2024 – Federal Register Recent Federal Regulation Documents
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Airworthiness Directives; Bombardier, Inc., Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-2A12 airplanes. This proposed AD was prompted by a report indicating that the fan in a transformer rectifier unit (TRU) can become inoperative in a manner that is not detectable by the fan monitoring circuit. This proposed AD would require replacement of the existing TRU Number 2 with a new part number that incorporates a correction to the fan and the monitoring circuit. This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Bombardier, Inc. Airplanes
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by a determination that a combination of system faults and procedural actions will cause the ground spoilers to deploy in the air. This AD requires revising the existing airplane flight manual (AFM) to add revised procedures. The FAA is issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; The Boeing Company Airplanes
The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-8 and Model 737-9 airplanes. This proposed AD was prompted by a Boeing review of the standby power system control unit (SPCU) design where a single point of failure exists internal to the SPCU. This proposed AD would require the installation of four diodes and changing wire bundles in the P5 panel, as well as performing installation and power tests and applicable on- condition actions. The FAA is proposing this AD to address the unsafe condition on these products.
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