Airworthiness directives › 2012-03-12
AD 2012-03-12 Airworthiness Directives; General Electric Company (GE) Turbofan Engines
Applicability*9
This AD is applicable to all GE CF6-80C2 model turbofan engines, including engines marked on the engine data plate as CF6-80C2B7F1.
Compliance
(1) Perform a one-time inspection of the No. 3 bearing packing. Use paragraphs 3.A.(1) through 3.A.(1)(b) of the Accomplishment Instructions of GE Service Bulletin (SB) No. CF6-80C2 S/B 72-1405, Revision 01, dated December 16, 2011, to do your inspection. Inspect as follows: (i) Before 5,500 engine cycles-in-service (CIS) since the last engine shop visit where the fan was removed from the core, or within 500 CIS from the effective date of this AD, whichever occurs later; or (ii) At the next shop visit, if the engine passes an optional borescope inspection (BSI) within 500 CIS from the effective date of this AD. (2) Remove the packing from service before further flight if the wrong packing part number (P/N) is found on the engine during the inspection of paragraph (f)(1) of this AD.
Required actions
The optional BSI identified in paragraph (f)(1)(ii) of this AD must determine an “ACCEPTABLE FLOW” packing is installed. Use paragraph 3.A, excluding subparagraphs 3.A.(4)(a) 6 through 3.A.(4)(a) 9 and 3.A.(4)(b) 5, of the Accomplishment Instructions of GE SB CF6-80C2 S/B 72-1427, dated December 16, 2011, to do your BSI.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done.
Affected ADs
None.
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