AD/RB211/40 - Low Pressure Turbine Casing (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Rolls Royce Turbine Engines - RB211 Series AD/RB211/40 Low Pressure Turbine Casing 7/2009

Applicability: RB211-524C2-19 and RB211-524C2-B-19 engines, all serial numbers.

Note 1: These engines are known to be installed, but not limited to Boeing 747 series aircraft. Requirement: 1. Carry out the actions defined in Section 3. Accomplishment Instructions of Rolls-Royce Non-Modification Service Bulletin (NMSB) No. 72-AG076.

2. Repeat the actions detailed in Requirement 1 of this AD.

Note 2: EASA AD 2009-0083 dated 16 April 2009 refers. Compliance: For Requirement 1:

If at the effective date of this AD the life of the LPT Casing is known and less than 4,500 Cycles Since New (CSN) - Before the life of the LPT casing has reached 4,500 CSN.

If at the effective date of this AD the life of the LPT Casing is known and greater than or equal to 4,500 CSN and the life of the LPT casing since last full Fluorescent Penetrant Inspection (FPI) is either known and greater than 4,500 Cycles or not known - At the next shop visit.