AD 86-15-01 R2

86-15-01 R2 ROLLS-ROYCE LIMITED: Amendment 39-5346 as amended by Amendment 39-5608 is further amended by Amendment 39-5638. Applies to Rolls-Royce RB211-22B, -535C, and -524 series turbofan engines.

Compliance is required as indicated, unless already accomplished.

To prevent an uncontained stage 1 high pressure compressor (HPC) disk fracture, accomplish the following:

(a) Remove from service stage 1 and 2 HPC disk assemblies identified by serial number in Appendix 3 of Rolls-Royce Alert Service Bulletin (ASB) RB.211-72-A7774, Revision 2, dated February 6, 1987, at the next 04 module rework, but not later than July 20, 1987.

(b) Remove from service stage 1 and 2 HPC disk assemblies identified by serial number in Appendix 4 of the Rolls-Royce (R-R) Alert Service Bulletin (ASB) RB.211-72-A7774, Revision 2, dated February 6, 1987, in accordance with the following criteria:

(1) For stage 1 and 2 HPC disk assemblies installed in R-R RB211-524 engines, prior toaccumulating a total part life of 4,050 cycles in service or before May 31, 1988, whichever occurs later.

(2) For stage 1 and 2 HPC disk assemblies installed in R-R RB211-22B engines, prior to accumulating total part life of 4,350 cycles in service or before May 31, 1988, whichever occurs later.

(3) For stage 1 and 2 HPC disk assemblies installed in R-R RB211-535C engines, prior to accumulating total part life of 5,150 cycles in service or before May 31, 1988, whichever occurs later.

NOTE: Module 04 rework is defined as any work carried out on any part of the 04 module after its removal from an engine for any reason other than use as a spare to transfer to another engine or to permit removal of the 03 module.

Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Engine Certification Office, Aircraft Certification Division, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803.

Upon submission of substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Engine Certification Office, New England Region, may adjust the compliance time specified in this AD.

Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished.

Rolls-Royce ASB RB.211-72-A7774, Revision 2, dated February 6, 1987, identified and described in this document, is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this document from the manufacturer may obtain copies upon request to Rolls-Royce plc, Technical Publications Department, P.O. Box 31, Derby DE2 8BJ, England. This document also may be examined at the Office of the Regional Counsel, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, Rules Docket Number 85- ANE-17, Room 311, between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday, except federal holidays.

This amendment, 39-5638, amends Amendment 39-5346 as amended by Amendment 39-5608, AD 86-15-01 R1.

This amendment, 39-5638, becomes effective on July 1, 1987.