Airworthiness directives › 2013-14-06
AD 2013-14-06 Airworthiness Directives; CFM International, S. A. Turbofan Engines
Applicability*9
This AD applies to CFM International S.A. (CFM) model CFM56-5 and CFM56-5B series turbofan engines with any of the hydro-mechanical unit (HMU) fuel control part numbers (P/Ns) in paragraphs (c)(1) and (c)(2) of this AD, installed: (1) CFM56-5: CFM P/Ns 1348M79P02; 1348M79P03; 1348M79P04; 1348M79P06; 1348M79P07; 1348M79P08; 1348M79P09; 1348M79P10; 1348M79P11; 1348M79P12; 1348M79P13; and 1348M79P14. (2) CFM56-5B: CFM P/Ns: 1348M79P08; 1348M79P09; 1348M79P10; 1348M79P11; 1348M79P12; 1348M79P13; and 1348M79P14.
Compliance
(1) From the effective date of this AD, record all TS-1 fuel usage. (2) If the HMU never uses TS-1 fuel, no further action is required.
Required actions
If the HMU has operated on TS-1 fuel, inspect the HMU for corrosion as follows: (1) For an HMU that has operated for fewer than 6,000 hours since new (HSN) or hours since last overhaul, inspect the HMU before 10,000 HSN or hours since last overhaul, whichever comes later. (2) For an HMU that has operated for 6,000 or more HSN or hours since last overhaul, inspect the HMU within 24 months or 4,000 hours after the effective date of this AD, whichever comes first. (3) Use paragraph 3.A(2) of CFM Service Bulletin (SB) No. CFM56-5 S/B 73-0182, Revision 6, dated March 8, 2012, or CFM SB No. CFM56-5B S/B 73-0122, Revision 8, dated March 8, 2012, to do the inspection.
Unsafe condition
Unless already done, do the following:
Affected ADs
None.
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