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AD/CFM56/33 - Inspection of Fan Blades with 25 Degree Mid-span Shrouds
CFM International Turbine Engines - CFM5CFM International Turbine Engines - CFM56 Series
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CFM International Turbine Engines - CFM56 Series
| AD/CFM56/33 | Inspection of Fan Blades with25 Degree Mid-span Shrouds | 10/2014 |
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| Applicability: | This AD applies to CFM International (CFM) CFM56-3 turbofan engines, all serial numbers, when equipped with fan blades with 25 degree mid-span shrouds: Part Numbers (P/N) 9527M99P08, 9527M99P09, 9527M99P10, 9527M99P11, and 1285M39P01, or fan blade pairs P/N 335-088-901-0, 335-088-902-0, 335-088-903-0, and 335-088-904-0.Note 1: These engines are known to be installed on, but not limited to, Boeing 737 series aeroplanes.Note 2: The installation of fan blades with 25 degree mid-span shrouds is not allowed on the CFM56-3C engine model. |
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| Requirements: | 1. INSPECTIONPerform an inspection of fan blades P/N 9527M99P08, 9527M99P09, 9527M99P10, 9527M99P11, and 1285M39P01, or fan blade pairs P/N 335‑088‑901-0, 335-088-902-0, 335‑088‑903‑0, and 335-088-904-0 in accordance with paragraphs 3.A (On-wing) or 3.B (In-shop) of CFM Service Bulletin (SB) CFM56-3/3B/3C 72-1067 original issue.Note 3: Inspections completed in accordance with CFM SB CFM56-3/3B/3CS/B 72-1067 original issue, within the last 3,000 Flight Cycles (FC) before the effective date of this AD satisfies Requirement 1 of this AD.2. If any damage is found, remove and replace the blades as instructed in the accomplishment instructions of CFM SB CFM56-3/3B/3C 72-1067 original issue.3. Do not install on any CFM56-3 engine model fan blades P/N 9527M99P08, 9527M99P09, 9527M99P10, 9527M99P11, and 1285M39P01, or fan blade pairs P/N 335-088-901-0, 335-088-902-0, 335-088-903-0, and 335-088-904-0 unless they have been previously inspected in accordance with paragraph 3 of the accomplishment instructions of CFM SB CFM56-3/3B/3C 72-1067 original issue.Note 4: The use of later approved revisions of CFM SB CFM56-3/3B/3C 72-1067 original issue is acceptable for compliance with the requirements of this AD.Note 5: EASA AD 2009-0036 dated 20 February 2009 refers. |
| Compliance: | 1, 2 and 3. The actions in Requirements 1, 2 and 3 must be taken as follows:(a) for Requirement 1: if not previously complied with, before further flight. Otherwise, at intervals not exceeding 3,000 FC from the last inspection.(b) for Requirement 2: before further flight.(c) for Requirement 3: after the effective date of this AD. |
| This Airworthiness Directive becomes effective on 9 May 2014. | |
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