airworthiness · Rule · Final rule; request for comments. · Published 2019-10-29 · Effective 2019-10-29 · 84 FR 57813
Document
Document number
2019-23715
Federal Register citation
84 FR 57813
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Pratt & Whitney Turbofan
Publication date
2019-10-29
Effective date
2019-10-29
FAA docket
Docket No. FAA-2019-0843
Abstract
The FAA is superseding Airworthiness Directive (AD) 2019-19-11 for certain Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines. AD 2019-19-11 required initial and repetitive inspections of the low-pressure compressor (LPC) inlet guide vane (IGV) and the LPC rotor 1 (R1) and, depending on the results of the inspections, possible replacement of the LPC. This AD requires the same inspection of the LPC R1 for cracks or damage, removes the inspection of the LPC IGV for proper alignment, and expands the applicability to certain additional PW turbofan engines. This AD also reduces the compliance time for these inspections for certain PW turbofan engines. This AD was prompted by recent findings of cracks in the LPC R1 and an additional in-flight failure of the LPC R1. The FAA is issuing this AD to address the unsafe condition on these products.