Airworthiness directives › 2012-17-04
AD 2012-17-04 Airworthiness Directives; Rolls-Royce plc Turbofan Engines
Applicability*9
This AD applies to Rolls-Royce plc (RR) RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines that have an intermediate pressure (IP) turbine disc with a serial number listed in Table 1 to paragraph (e) of this AD, installed.
Compliance
After the effective date of this AD, do not install any IP and Low Pressure (LP) turbine module on any engine with an IP turbine disc with an S/N listed in Table 1 to paragraph (e) of this AD if the life of the disc is equal to or greater than 9,700 standard duty cycles since new. After the effective date of this AD, do not install any IP turbine disk listed in Table 1 to paragraph (e) of this AD if the life of the disk is equal to or greater than 9,700 standard duty cycles since new.
Required actions
For the purposes of this AD, a shop visit is one where the IP and LP turbine module has been removed from the engine.
Unsafe condition
Unless already done, do the following. Remove disc serial numbers (S/Ns) listed in Table 1 to paragraph (e) of this AD within 9,700 standard duty cycles since new. Table 1 to Paragraph (e)—Affected IP Turbine Discs IP Turbine Disc S/N ADREB 73 ADREB 79 ADREB 80 ADREB 81 ADREB 82 ADREB 83 ADREB 84 ADREB 85 ADREB 86 ADREB 87 ADREB 88 ADREB 89 ADREB 90 ADREB 91 ADREB 92 ADREB 94 ADREB 96 ADREB 102 ADREB 103 ADREB 104
Affected ADs
None.
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