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Thu, Dec 20, 2018

AD: The Boeing Company Airplanes

AD NUMBER: 2018-25-15

PRODUCT: All The Boeing Company Model 727 airplanes.

ACTION: Final Rule.

SUMMARY: This AD was prompted by a report of cracking in the inboard lower flange and adjacent web near the forward attachment of the outboard flap track at a certain position on a Model 737-300 airplane.

The flap tracks of Model 737-300 airplanes are similar to the flap tracks of Model 727 airplanes.

This AD requires repetitive detailed inspections and surface high frequency eddy current (HFEC) inspections of each outboard flap track at certain positions for any crack and discrepancy, and applicable on-condition actions.

DATES: This AD is effective January 22, 2019.

COST: The FAA estimates that this AD affects 16 airplanes of U.S. registry. Operators may incur the following costs in order to comply with this AD:

  • Inspections 113 work-hours × $85 per hour = $9,605 per airplane per inspection cycle.
FMI: AD

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