Airworthiness Directive · Amendment 39-9091 · 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 telegraphic airworthiness directive (AD), applicable to Pratt & Whitney (PW) JT8D series turbofan engines, that currently requires repetitive ultrasonic inspections of a combustion chamber outer case (CCOC) weld, but also allows visual inspection or fluorescent magnetic penetrant inspection (FMPI) of certain CCOC's under specified conditions. This amendment allows ultrasonic inspections only. This amendment is prompted by the greater availability of ultrasonic inspection equipment, which provides a more definitive means of discovering cracks than either visual inspections or FMPI. The actions specified by this AD are intended to prevent rupture of the CCOC, which could result in fire, engine cowl release, or aircraft damage.
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.
