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AD: Airbus SAS Airplanes

AD NUMBER: 2019-19-01

PRODUCT: All Airbus SAS Model A320-251N and -271N airplanes, and Model A321-251N, -253N, -271N, and -272N airplanes.

ACTION: Final rule

SUMMARY: This AD was prompted by reports that the regulated bleed temperature was measured above the design target with a temperature regulation shift phenomenon, and investigation results show that incorrect temperature regulation can degrade pneumatic system components located downstream of the precooler.

This AD requires uploading improved bleed monitoring computer (BMC) software (SW), as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference.

DATES: This AD is effective December 11, 2019.

COST: The FAA estimates that this AD affects 85 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

  • Labor: 4 work-hours × $85 per hour = $340 per airplane.
FMI: AD

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