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Thu, Sep 13, 2018

AD: Rolls-Royce Deutschland Ltd & Co KG Tay 620-15 Engines

AD NUMBER: 2018-17-13

PRODUCT: Certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Tay 620-15 turbofan engines.

ACTION: Final Rule.

SUMMARY: This AD was prompted by reports of low-pressure compressor (LPC) fan blade retention lug failures.

This AD requires reviewing the engine maintenance records and replacing the LPC fan blade with a part eligible for installation if the dry-film lubricant (DFL) treatment limit is exceeded.

DATES: This AD is effective October 16, 2018.

COST: The FAA estimates  that this AD affects 25 engines installed on airplanes of U.S. registry. The cost of compliance is estimated as follows:

  • Record search to establish number of LPC blade DFL applications - 1.5 work-hours × $85 per hour = $127.50 per engine
  • Lost life for a LPC blade set and replacement of blades - 4.0 work-hours × $85 per hour = $340. Parts $16,550. Cost per engine $16,890.
FMI: AD

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