Airworthiness Directive 96-18-08
one-timeAirworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines
What this AD requires
This amendment adopts a new airworthiness directive (AD), applicable to Pratt & Whitney PW2000 series turbofan engines, that requires a reduction in the cyclic service life limit for hubs, disks, airseals, blade retaining plates, and airsealing ring supports on certain high pressure turbines (HPT) and low pressure turbines (LPT), and provides for optional inspections for cracks or rework of certain HPT and LPT hardware in order to retain the original, higher cyclic service life limit for these components. This amendment is prompted in part by new temperature data from engine testing, which were used in recalculating stress levels, and resulted in a change to the calculated cyclic service life limit. The actions specified by this AD are intended to prevent HPT or LPT failure, which may result in an uncontained engine failure and possible damage to the aircraft.
Which aircraft AD 96-18-08 applies to
Whether AD 96-18-08 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.