Federal Register - December 21, 2021
Versione di testo Cosa è?Dateas è un sito indipendente non affiliato a entità governative. La fonte dei documenti PDF che pubblichiamo qui è l'entità governativa indicata in ciascuno di essi. Le versioni in testo sono trascrizioni che realizziamo per facilitare l'accesso e la ricerca di informazioni, ma possono contenere errori o non essere complete.
Source: Federal Register
Federal Register / Vol. 86, No. 242 / Tuesday, December 21, 2021 / Rules and Regulations
release, damage to the engine, and damage to the airplane.
d Subject
jspears on DSK121TN23PROD with RULES1
Joint Aircraft System Component JASC
Code 7250, Turbine Section.
f Compliance
e Unsafe Condition 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 addressed, could result in uncontained disk
VerDate Sep<11>2014
17:14 Dec 20, 2021
Jkt 256001
Comply with this AD within the compliance times specified, unless already done.
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,
PO 00000
Frm 00036
Fmt 4700
Sfmt 4700
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.
h Definitions For the purpose of this AD:
1 An engine shop visit is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges, except that the separation of engine flanges solely for the
E:FRFM21DER1.SGM
21DER1
ER21DE21.008
72180
