Division Rolls Royce Turbine Engines - RB211 Seri - AD/RB211/36 - High Pressure Turbine Cooling Air Holes - Rolls Royce Turbine Engines - RB211 Series

Rolls Royce Turbine Engines - RB211 Series

AD/RB211/36	High Pressure Turbine Cooling Air Holes	9/2006

Applicability:	Rolls Royce Models RB211-524-02, 524B2-19, 524B2-39, 524B-02, 524B3-02, 524C2-19, 524B4-02, 524B4-D-02, 524D4-19, 524D4-39, 524D4-B-19, 524D4-B-39, 524D4X-19, 524D4X-B-19, 524B-B-02, 524B2-B-19, 524C2-B-19, 524G2-19, 524G3-19, 524G2-T-19, 524G3-T-19, 524H-36, 524H2-19, 524H-T-36 and524H2-T-19 installed on, but not limited to, Boeing 747, Boeing 767 and Lockheed L-1011 aircraft
Requirement:	1. Carry out an Eddy Current Inspection (ECI), as defined in Section 3., Accomplishment instructions of Rolls-Royce NMSB 72-AE969 or later EASA approved revision on the HP turbine discs identified in Sections 1.A.(3) and 1.A.(4) of Rolls-Royce NMSB 72-AE969 or later EASA approved revision.2. Repeat the inspection as detailed in requirement 1of this AD.Note: EASA AD 2006-0180 dated 26 June 2006 refers.
Compliance:	1. In accordance with the following schedule:By whichever is the soonest of the following conditions:a) If the HP turbine disc cycles since new is greater than 2750 cycles on the effective date of this AD, then inspect the disc at next shop visit where the HP turbine blades have been removed from the HP turbine disc.b) If the HP turbine disc cycles since new is greater than 2750 cycles on the effective date of this AD; and- the HP turbine rotor is currently undergoing a shop visit, and- has not yet been reinstalled into the Combustor Outer Case, and- the HP turbine blades have been removed from the HP turbine disc, then the HP turbine disc must be inspected before fitment to an aeroplane.If a HP turbine disc has previously passed inspection to the Eddy Current inspection procedure as defined in Rolls-Royce TSD594-J Overhaul Process Manual Task 70-00-00-200-223 and at a disc life above 2750 cycles since new that meets the criteria detailed in requirement 1 of this AD, then that inspection satisfies the requirements stated in requirement 1 of this AD.

Applicability:

Rolls Royce Models RB211-524-02, 524B2-19, 524B2-39, 524B-02, 524B3-02, 524C2-19, 524B4-02, 524B4-D-02, 524D4-19, 524D4-39, 524D4-B-19, 524D4-B-39, 524D4X-19, 524D4X-B-19, 524B-B-02, 524B2-B-19, 524C2-B-19, 524G2-19, 524G3-19, 524G2-T-19, 524G3-T-19, 524H-36, 524H2-19, 524H-T-36 and524H2-T-19 installed on, but not limited to, Boeing 747, Boeing 767 and Lockheed L-1011 aircraft

Requirement:

1. Carry out an Eddy Current Inspection (ECI), as defined in Section 3., Accomplishment instructions of Rolls-Royce NMSB 72-AE969 or later EASA approved revision on the HP turbine discs identified in Sections 1.A.(3) and 1.A.(4) of Rolls-Royce NMSB 72-AE969 or later EASA approved revision.2. Repeat the inspection as detailed in requirement 1of this AD.Note: EASA AD 2006-0180 dated 26 June 2006 refers.

Compliance:

1. In accordance with the following schedule:By whichever is the soonest of the following conditions:a) If the HP turbine disc cycles since new is greater than 2750 cycles on the effective date of this AD, then inspect the disc at next shop visit where the HP turbine blades have been removed from the HP turbine disc.b) If the HP turbine disc cycles since new is greater than 2750 cycles on the effective date of this AD; and- the HP turbine rotor is currently undergoing a shop visit, and- has not yet been reinstalled into the Combustor Outer Case, and- the HP turbine blades have been removed from the HP turbine disc, then the HP turbine disc must be inspected before fitment to an aeroplane.If a HP turbine disc has previously passed inspection to the Eddy Current inspection procedure as defined in Rolls-Royce TSD594-J Overhaul Process Manual Task 70-00-00-200-223 and at a disc life above 2750 cycles since new that meets the criteria detailed in requirement 1 of this AD, then that inspection satisfies the requirements stated in requirement 1 of this AD.

	2. At every subsequent shop visit where the HP turbine blades have been removed from the HP turbine disc.
	This Airworthiness Directive becomes effective on 31 August 2006.
Background:

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