Airworthiness Directive 2017-12077
one-timeAirworthiness Directives; Rolls-Royce Corporation Turbofan Engines
What this AD requires
We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Corporation (RRC) AE 3007C and 3007C1 turbofan engines. This AD was prompted by analysis and by cracks found in the high- pressure turbine (HPT) wheel during an inspection. This AD requires replacement of the affected HPT wheels at new, lower life limits. We are issuing this AD to correct the unsafe condition on these products.
Which aircraft AD 2017-12077 applies to
Applies to engines with 1st stage HPT wheels, P/N 23062373, 23065891, or 23070664; or 2nd stage HPT wheels, P/N 23063462, 23065892, 23069116, 23069592, or 23074643, installed. Does not apply to engines with 2nd stage HPT wheel P/N 23069592 with an S/N listed in Table 6 of RRC Alert Service Bulletin (ASB) AE 3007C-A-72-318, Revision 2, dated September 23, 2016, installed.
Whether AD 2017-12077 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.