Airworthiness Directive 2013-23-14
one-timeAirworthiness Directives; General Electric Company Turbofan Engines
What this AD requires
We are adopting a new airworthiness directive (AD) for certain General Electric Company model GEnx-2B67 and GEnx-2B67B turbofan engines. This AD was prompted by the original equipment manufacturer's disclosure that certain critical rotating life-limited parts (LLPs) used in Boeing 747-8 flight tests had consumed more cyclic life than they would have in revenue flight cycles. These parts were then installed into engines and introduced into revenue service without adjustment to remaining cyclic life. This AD requires a one-time adjustment to the cycle counts of those LLPs to account for the additional low cycle fatigue (LCF) life consumed during flight tests. We are issuing this AD to prevent the failure of critical rotating LLPs, uncontained engine failure, and damage to the airplane.
Which aircraft AD 2013-23-14 applies to
Applies only to the listed serial-numbered GEnx-2B67 and GEnx-2B67B engines whose critical rotating life-limited parts (LLPs) were used in Boeing 747-8 flight tests and consumed more cyclic life than accounted for before being placed into revenue service.
Whether AD 2013-23-14 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.