Federal Register - October 8, 2021
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Source: Federal Register
Federal Register / Vol. 86, No. 193 / Friday, October 8, 2021 / Proposed Rules
Joint Aircraft System Component JASC
Code 7250, Turbine Section.
addressed, could result in uncontained disk release, damage to the engine, and damage to the airplane.
e Unsafe Condition
f Compliance
This AD was prompted by a report of a quality escape during the manufacturing of an HPT rotor stage 1 disk. The FAA is issuing this AD to prevent failure of the HPT rotor stage 1 disk. The unsafe condition, if not
Comply with this AD within the compliance times specified, unless already done.
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g Required Actions For all affected engines, at the next engine shop visit or before the HPT rotor stage 1 disk accumulates 7,600 cycles since new, whichever occurs first after the effective date of this AD, remove the HPT rotor stage 1 disk from service and replace with a part eligible for installation.
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