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Mon, Apr 13, 2009

AD: Honeywell

AD NUMBER: 2009-08-07
MANUFACTURER: Honeywell
SUBJECT: Airworthiness Directive 2009-08-07
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for Honeywell International Inc. ALF502L-2 and ALF502L-2C turbofan engines with certain high-pressure compressor (HPC) first stage discs installed. This AD requires performing a dimensional inspection to determine if excessive disc balance material was removed and a magnetic particle inspection if the disc passes the dimensional inspection. This AD results from reports of discs found with excessive material removed from the balancing locations of the disc. We are issuing this AD to prevent the discs from fracturing before reaching the currently published life limit. A disc fracture could result in an uncontained failure of the disc and damage to the airplane.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/

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