Airworthiness directives › 2013-07-10
AD 2013-07-10 Airworthiness Directives; International Aero Engines AG Turbofan Engines
Applicability*9
This AD applies to International Aero Engines AG (IAE), V2525-D5 and V2528-D5 turbofan engines, serial numbers V20001 through V20285, with No. 4 bearing internal scavenge tube, part number (P/N) 2A2074-01, and No. 4 bearing external scavenge tube, P/N 6A5254, installed.
Compliance
Replace the No. 4 bearing internal scavenge tube, P/N 2A2074-01, at each combustor module-level exposure after the No. 4 bearing internal scavenge tube has accumulated 10,000 flight cycles (FCs) since new. If the FCs on the tube cannot be confirmed, replace the tube at each combustor module-level exposure.
Required actions
At each installation, check the alignment of the No. 4 bearing external scavenge tube, P/N 6A5254, in accordance with paragraph 3.A. PART 2, of IAE Non-Modification Service Bulletin (NMSB) No. V2500-ENG-72-0630, Revision 1, dated September 20, 2012. If the tube is misaligned, replace with a new tube.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done.
Affected ADs
None.
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