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AD/V2500/4 - High Pressure Turbine Stage 2 Air Seal
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AD/V2500/4 - High Pressure Turbine Stage 2 Air Seal
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| AD/V2500/4 | High Pressure Turbine Stage 2 Air Seal | 13/2007 |
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| Applicability: | International Aero Engines (IAE) model V2500-A1, V2522-A5, V2524-A5,V2527-A5, V2527E-A5, V2527M-A5, V2530- A5, V2533-A5, V2525-D5, and V2528-D5 turbofan engines with high pressure turbine (HPT) stage 2 air seals, part numbers (P/Ns) 2A0487, 2A1159, 2A1160, 2A3108, 2A3179, 2A3185, 2A3425, and 2A3596, installed.Note 1: These engines are installed on, but not limited to, Airbus A319, A320, A321, and Boeing MD-90 aeroplanes. |
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| Requirement: | Action in accordance with FAA AD 2007-21-05.Definition: For the purposes of this AD, "At Opportunity'' is defined as when the engine is disassembled, the HPT stage 2 seal is exposed, and the HPT stage 1 and 2 rotors are separated after 2,000 Cycles Since New (CSN).Note 2: FAA AD 2007-21-05 Amdt 39-15223 dated 2 October 2007 refers. |
| Compliance: | As detailed in FAA AD 2007-21-05 with a revised effective date of20 December 2007. |
| This Airworthiness Directive becomes effective on 20 December 2007. | |
| Background: | This AD results from a report that HPT stage 2 air seals have developed cracks. The issuing of this AD is intended to prevent uncontained failure of the HPT stage 2 air seal. |
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David Punshon
Delegate of the Civil Aviation Safety Authority
25 October 2007