Airworthiness Directive 2015-18-04
one-timeAirworthiness Directives; CFM International S.A. Turbofan Engines
What this AD requires
The FAA is correcting an airworthiness directive (AD) that published in the Federal Register. That AD applies to certain CFM International S.A. (CFM) CFM56-7B and CFM56-3 turbofan engines. Four headings in the Compliance section are incorrect. This document corrects the errors. In all other respects, the original document remains the same.
Which aircraft AD 2015-18-04 applies to
Applies only to engines with a 73-tooth or 41-tooth gearshaft installed in the accessory gearbox (AGB) having a gearshaft serial number listed in Appendix A or Appendix B of CFM Service Bulletin No. CFM56-7B S/B 72-0964, Revision 1, dated December 15, 2014.
Whether AD 2015-18-04 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.