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Airworthiness directives › 2022-02-05

AD 2022-02-05 Airworthiness Directives; Pratt & Whitney Turbofan Engines

2022-01-27
2022-01-12
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Engine
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Applicability*9

This AD applies to Pratt & Whitney (P&W) PW1519G, PW1521G, PW1521G-3, PW1521GA, PW1524G, PW1524G-3, PW1525G, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A model turbofan engines with an installed: (1) High-pressure turbine (HPT) 1st-stage disk, part number (P/N) 30G5701, with serial number (S/N) LKLBCY9473, LKLBDG4865, LKLBDG4877, LKLBDG5064, LKLBDG4951, LKLBEH5482, LKLBCY9462, LKLBDG5142, LKLBFL9238, or LKLBF88737; or (2) HPT 2nd-stage disk, P/N 30G5002, with S/N LKLBCT8724, LKLBDA4633, LKLBDA4689, LKLBD40801, LKLBEL3603, LKLBD40863, LKLBCT8771, LKLBDA4691, LKLBEL3600, LKLBD40830, or LKLBD40845.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

(1) For affected engines with an installed HPT 1st-stage disk, P/N 30G5701, having an S/N listed in paragraph (c)(1) of this AD, within 30 days after the effective date of the AD, remove the HPT 1st-stage disk from service and replace with a part eligible for installation. (2) For affected engines with an installed HPT 2nd-stage disk, P/N 30G5002, having an S/N listed in paragraph (c)(2) of this AD, within 30 days after the effective date of the AD, remove the HPT 2nd-stage disk from service and replace with a part eligible for installation.

Unsafe condition

This AD was prompted by an analysis performed by P&W of an event involving an uncontained failure of an HPT 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to prevent failure of HPT 1st-stage and HPT 2nd-stage disks. The unsafe condition, if not addressed, could result in uncontained HPT disk failure, release of high-energy debris, damage to the engine, damage to the airplane, and loss of the airplane.

Affected ADs

None.

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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1