AD 2008-14-15 Airworthiness Directives; International Aero Engines AG (IAE) V2500 Series Turbofan Engines

This AD applies to IAE V2500-A1, V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, V2533-A5, V2525-D5, and V2528-D5 turbofan engines with a part listed by part number (P/N) in this AD installed. These engines are installed on, but not limited to, Airbus A319, A320, A321, and McDonnell Douglas MD-90 airplanes.

You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. V2500-A1 Engines (f) For V2500-A1 engines, remove the parts listed by P/N in the following Table 1 of this AD at the next shop visit after the effective date of this AD but not later than November 30, 2008. The ATA chapter reference of the IAE V2500-A1 engine manual (E-V2500-1IA) contains information on removing the parts. Table 1.—V2500-A1 Parts To Be Removed ATA chapter reference P/N Nomenclature 72-42-20 2A0367-01 Tube Assy of, Weep, No. 4 Bearing Outer. 72-42-20 2A2873-01 Tube Assy of, Weep, No. 4 Bearing Outer. 72-42-20 2A0830-01 Tube, Scavenge, No. 4 Bearing Assy. 72-42-20 2A1949-01 Tube, Scavenge, No. 4 Bearing Assy. 72-42-20 2A2028-01 Tube, Scavenge, No. 4 Bearing Assy. 72-42-20 2A0830-001 Tube, Scavenge, No. 4 Bearing Assy. 72-42-20 2A2274-01 Tube, Scavenge, No. 4 Bearing Assy. 72-42-33 2A0853 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A2055 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A2834 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A2930 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A3525 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A3538 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A0851 Support Assy, No. 4 Bearing Seal. 72-42-33 2A2833 Support, No. 4 Bearing, Seal Assy. 72-42-33 2A3537 Support, No. 4 Bearing Seal Assy. 72-42-35 2A0892-01 Duct Assy, Cooling Air, No. 4 Bearing, Front. 72-42-35 2A2257-01 Duct Assy, Cooling Air, No. 4 Bearing, Front. 72-43-20 2A2056 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A2931 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A3526 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A0847 Seal Ring Holder. 72-43-20 2A0891-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-43-20 2A1205-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-43-20 2A3078-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-45-11 2A0594 Metering Plug, HPT Hub, Stage 1. 72-45-11 2A1040 Metering Plug, HPT Hub, Stage 1. 72-45-11 2A2181 Metering Plug, HPT Hub, Stage 1. 72-45-13 2A0884 Seal Air, HPT Stage 1. 72-45-13 2A1203 Seal Air, HPT Stage 1. 72-45-13 2A0884-001 Seal Air, HPT Stage 1. 79-22-49 5R8111 Tube A/O Oil—No. 4 Brg Scav Dif Case to Bif Panel. 79-22-49 5R8138 Tube A/O Oil—No. 4 Brg Scav Dif Case to Bif Panel. 79-22-49 6A5367 Tube A/O Oil—No. 4 Brg Scav Dif Case to Bif Panel. 79-22-49 5A9083 Tube A/O Oil—No. 4 Brg Discon to Discon. 79-22-49 5A9084 Tube A/O Oil—No. 4 Brg Discon to Scav Valve. 79-22-49 5A8573 Tube A/O Oil—Press ‘T' To Pressure Transducer. 79-23-51 1648MK2 Scavenge Valve. V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 Engines (g) For V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 engines, remove the parts listed by P/N in the following Table 2 of this AD at the next shop visit after the effective date of this AD but not later than June 30, 2011. The ATA chapter reference of the IAE V2500-A5 engine manual (E-V2500-1IA) contains information on removing the parts. Table 2.—V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 Parts To Be Removed ATA chapter reference P/N Nomenclature 72-42-20 2A0367-01 Tube Assy of, Weep, No. 4 Bearing Outer. 72-42-20 2A2873-01 Tube Assy of, Weep, No. 4 Bearing Outer. 72-42-33 2A2055 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A2834 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A2930 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A3525 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A3538 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A0851 Support Assy, No. 4 Bearing Seal. 72-42-33 2A2833 Support, No. 4 Bearing, Seal Assy. 72-42-33 2A3537 Support, No. 4 Bearing Seal Assy. 72-42-35 2A0892-01 Duct Assy, Cooling Air, No. 4 Bearing, Front. 72-42-35 2A2257-01 Duct Assy, Cooling Air, No. 4 Bearing, Front. 72-43-20 2A2056 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A2931 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A3526 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A0847 Seal Ring Holder. 72-43-20 2A0891-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-43-20 2A1205-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-43-20 2A3078-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-45-11 2A0594 Metering Plug, HPT Hub, Stage 1. 72-45-11 2A1040 Metering Plug, HPT Hub, Stage 1. 72-45-11 2A2354 Metering Plug, HPT Hub, Stage 1. 72-45-11 2A3182 Metering Plug, HPT Hub, Stage 1. 72-45-13 2A1352 Seal Air, HPT Stage 1. 72-45-13 2A3032 Seal Air, HPT Stage 1. 79-22-49 5R8138 Tube A/O Oil—No. 4 Brg Scav Dif Case to Bif Panel. 79-22-49 6A5367 Tube A/O Oil—No. 4 Brg Scav Dif Case to Bif Panel. 79-22-49 5A9083 Tube A/O Oil—No. 4 Brg Discon to Discon. 79-22-49 5A9084 Tube A/O Oil—No. 4 Brg Discon to Scav Valve. 79-22-49 5A8573 Tube A/O Oil—Press ‘T' To Pressure Transducer. (h) For V2522-A5, V2524-A5, V2527-A5, V2527E-A5, V2527M-A5, V2530-A5, and V2533-A5 engines with HPT stage 1 rotor assembly, P/Ns 2A9521-002 and 2A9621-002, the stage 1 HPT hub metering plug, P/N 2A3182, does not need to be removed. V2525-D5 and V2528-D5 Engines (i) For V2525-D5 and V2528-D5 engines, remove the parts listed by P/N in the following Table 3 of this AD at the next shop visit after the effective date of this AD but not later than June 30, 2011. The ATA chapter reference of the IAE V2500-D5 engine manual (E-V2500-3IA) contains information on removing the parts. Table 3.—V2525-D5 and V2528-D5 Parts To Be Removed ATA chapter reference P/N Nomenclature 72-42-20 2A0367-01 Tube Assy of, Weep, No. 4 Bearing Outer. 72-42-20 2A2873-01 Tube Assy of, Weep, No. 4 Bearing Outer. 72-42-33 2A0851 Support Assy, No. 4 Bearing Seal. 72-42-33 2A2833 Support, No. 4 Bearing, Seal Assy. 72-42-33 2A3537 Support, No. 4 Bearing Seal Assy. 72-42-33 2A2834 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A2930 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A3525 Seal Assy, No. 4 Bearing, Front. 72-42-33 2A3538 Seal Assy, No. 4 Bearing, Front. 72-42-35 2A2257-01 Duct Assy, Cooling Air, No. 4 Bearing, Front. 72-43-20 2A2056 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A2931 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A3526 Seal Assy, No. 4 Bearing, Rear. 72-43-20 2A0847 Seal Ring Holder. 72-43-20 2A1205-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-43-20 2A3078-01 Duct Assy, Cooling Air, No. 4 Bearing, Rear. 72-45-11 2A3182 Metering Plug, HPT Hub, Stage 1. 72-45-11 2A2354 Metering Plug, HPT Hub, Stage 1. 72-45-13 2A1352 Seal Air, HPT Stage 1. 72-45-13 2A3032 Seal Air, HPT Stage 1. (j) For V2525-D5 and V2528-D5 engines with HPT stage 1 rotor assembly, P/Ns 2A9521-002 and 2A9621-002, the stage 1 HPT hub metering plug, P/N 2A3182, does not need to be removed. Previous Credit (k) If you have accomplished IAE Service Bulletin V2500-ENG-72-0541, Revision 4, dated March 12, 2008, you have complied with this AD. (l) After the effective date of this AD, do not install any part that has a P/N listed in this AD. Alternative Methods of

This AD results from instances of oil loss from the No. 4 bearing compartment. We are issuing this AD to prevent heat damage to high-pressure turbine (HPT) and low-pressure turbine (LPT) critical life limited hardware such as the HPT stage 1-2 airseal. Damage to the HPT stage 1-2 airseal could cause uncontained engine failure and damage to the airplane.