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Fri, Oct 12, 2018

AD: CFM International S.A. Turbofan Engines

AD NUMBER: 2018-19-16

PRODUCT: All CFM International S.A. (CFM) LEAP-1A23, -1A24, -1A24E1, -1A26, -1A26E1, -1A26CJ, -1A29, -1A29CJ, -1A30, -1A32, - 1A33, -1A33B2, and -1A35A turbofan engines with certain full authority digital engine control (FADEC) and prognostic health monitoring (PHM) software installed.

ACTION: Final Rule.

SUMMARY:  This AD requires removing certain FADEC and PHM software and installing versions eligible for installation.

This AD was prompted by aborted takeoffs after engines did not advance to the desired takeoff fan speed due to icing in the pressure sensor line.

DATES: This AD is effective October 25, 2018.

COST: The FAA estimates that this AD affects 82 engines installed on airplanes of U.S. registry. The cost of compliance is estimated as follows:
Software installation - 1 work-hour × $85 per hour = $85.

FMI: AD

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