Airworthiness directives › 2012-11-01
AD 2012-11-01 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.
Required actions
After the effective date of this AD, do not install any IP turbine rotor discs, P/N FK33083, into any engine.
Unsafe condition
Compliance is required within 30 days after the effective date of this AD, unless already done. (f) After the effective date of this AD, remove from service the parts listed by part number (P/N) in Table 1 of this AD before exceeding the new life limit indicated. Table 1—Reduced Part Lives—Life in Cycles Using the MAX Profile Part nomenclature P/N New life limit in MAX profile cycles (1) Low-pressure (LP) Compressor Rotor Disc FK14399, FK30901 10,080. (2) LP Compressor Rotor Shaft FK20840 7,950. (3) Intermediate-pressure (IP) Compressor Rotor Shaft FK24100, FK24496 8,140. (4) IP Rear Shaft FK23564, FW18545 15,000. (5) High-pressure (HP) Compressor Stage 1 to 4 Rotor Discs Shaft FK24009 MAX profile cycles prohibited. (6) HP Compressor Stage 1 to 4 Rotor Discs Shaft FK26167, FK32580, FW88724 4,500. (7) HP Compressor Stage 1 to 4 Rotor Discs Shaft FW11590, FW61622, FW88723, FW88725 6,000. (8) HP Compressor Stage 5 and 6 Discs and Cone FK25230, FK27899 4,500. (9) HP Compressor Stage 5 and 6 Discs and Cone FW24633 5,800. (10) HP Compressor Stage 5 and 6 Discs and Cone FW24634 5,060. (11) HP Turbine Rotor Disc FK24651, FK24790 4,500. (12) HP Turbine Rotor Disc FK26893 5,540. (13) IP Turbine Rotor Disc FK21117, FK33049 8,400. (14) IP Turbine Rotor Disc FK33083 MAX profile cycles prohibited. (15) IP Turbine Rotor Shaft FK23295, FK25180, FW18550, FW19626 10,380. (16) LP Turbine Stage 1 Rotor Disc FK24971 15,000. (17) LP Turbine Stage 2 Rotor Disc FK23208, FK26625 15,000. (18) LP Turbine Stage 3 Rotor Disc FK24199, FK26626 15,000. (19) LP Turbine Stage 4 Rotor Disc FK23210 15,000. (20) LP Turbine Stage 5 Rotor Disc FK24200 15,000. (21) LP Turbine Rotor Shaft FK20817 7,360.
Affected ADs
None.
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