Airworthiness Directive 2017-24-06
one-timeAirworthiness Directives; CFM International S.A. Turbofan Engines
What this AD requires
We are adopting a new airworthiness directive (AD) for certain CFM International S.A. (CFM) LEAP-1A turbofan engines. This AD requires removal, inspection, rework, and re-identification of the high-pressure turbine (HPT) stage 2 disk, part number (P/N) 2466M52G03. This AD was prompted by a quality escape at the manufacturer that resulted in cracks appearing during forging of the HPT stage 2 disks. We are issuing this AD to address the unsafe condition on these products.
Which aircraft AD 2017-24-06 applies to
Applies only to engines with HPT stage 2 disk P/N 2466M52G03 having a serial number listed in Table 1 of CFM SB LEAP-1A SB 72-0167-01A-930A-D, Issue 001, dated September 28, 2017.
Whether AD 2017-24-06 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.