Airworthiness directives › 2017-23-03
AD 2017-23-03 Airworthiness Directives; Engine Alliance Turbofan Engines
Applicability*9
This AD applies to all Engine Alliance (EA) GP7270, GP7272, and GP7277 model turbofan engines.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Perform a visual inspection of the fan hub in accordance with the Accomplishment Instructions, paragraph 1.B., 1.C., and 1.D., of EA Alert Service Bulletin (ASB) EAGP-A72-383, Revision No. 1, dated October 12, 2017, at the times specified in paragraphs (g)(1)(i) through (iii) of this AD. (i) For fan hubs with 3,500 cycles since new (CSN) or more on the effective date of this AD, inspect within 2 weeks after the effective date of this AD. (ii) For fan hubs with 2,000 CSN or more, but less than 3,500 CSN, on the effective date of this AD, inspect within 5 weeks after the effective date of this AD. (iii) For fan hubs with less than 2,000 CSN on the effective date of this AD, inspect within 8 weeks after the effective date of this AD. (2) If defects or damage to the fan hub are found outside the serviceable limits specified in Table 1 of EA ASB EAGP7-A72-383, Revision No. 1, dated October 12, 2017, remove the hub from service and replace with a part that passed the inspection specified in paragraph (g)(1) of this AD, prior to further flight.
Unsafe condition
This AD was prompted by failure of a fan hub. We are issuing this AD to prevent failure of the fan hub. The unsafe condition, if not corrected, could result in uncontained release of the fan hub, damage to the engine, and damage to the airplane.
Affected ADs
This AD supersedes Emergency AD 2017-21-51, Product Identifier 2017-NE-37-AD, issued on October 12, 2017.
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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