Airworthiness directives › 2019-16-15
AD 2019-16-15 Airworthiness Directives; Pratt & Whitney Turbofan Engines
Applicability*9
This AD applies to Pratt & Whitney (PW) PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 90 days after the effective date of this AD, revise the Airworthiness Limitations Section of the PW Instructions for Continued Airworthiness, and for air carrier operations, the approved continuous airworthiness maintenance program, with the following maximum cycle limits for HPC front hub, part number 30G3210. (1) For PW PW1519G, PW1521G, PW1521GA, PW1524G, PW1525G, PW1521G-3, PW1524G-3, and PW1525G-3 model turbofan engines, use the cycle limits established in Table 3, Revision to Table of Limits, of PW Service Bulletin (SB) PW1000G-A-72-00-0109-00A-930A-D, Issue No. 001, dated April 2, 2019. (2) For PW PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines, use the cycle limits established in Table 3, Revision to Table of Limits, of PW SB PW1000G-A-72-00-0058-00B-930A-D, Issue No. 002, dated May 10, 2019.
Unsafe condition
This AD was prompted by corrosion found on the high-pressure compressor (HPC) front hub, which could result in certain HPC front hubs cracking before reaching their published life limit. The FAA is issuing this AD to prevent failure of the HPC front hub. The unsafe condition, if not addressed, could result in uncontained release of the HPC front hub, damage to the engine, and damage to the airplane.
Affected ADs
None.
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