Airworthiness Directive · Amendment 39-9461 · Pratt & Whitney Division Engines
Pratt & Whitney Division Engines
This AD applies to Pratt & Whitney Division JT8D-1, JT8D-11, JT8D-15, JT8D-15A, JT8D-17, JT8D-17A, JT8D-17AR, JT8D-17R, JT8D-1A, JT8D-1B, JT8D-7, JT8D-7A, JT8D-7B, JT8D-9, JT8D-9A.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment supersedes an existing airworthiness directive (AD), applicable to Pratt & Whitney (PW) JT8D series turbofan engines, that currently requires inspection, and replacement, if necessary, of suspect 7th through 12th stage high pressure compressor (HPC) disks. This amendment adds 46 more applicable engines, revises the inspection requirements, incorporates a new PW Alert Service Bulletin (ASB), and requires reporting the results of the inspection to the manufacturer. This amendment is prompted by the identification of additional suspect engines, by the development of revised inspection intervals, and by the issuance of the new PW ASB. The actions specified by this AD are intended to prevent an uncontained HPC disk failure, which can result in damage to the aircraft.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
