AD 86-07-01

86-07-01 ROLLS-ROYCE LIMITED: Amendment 39-5273. Applies to Rolls-Royce RB211-535E4 turbofan engines.

Compliance is required as indicated, unless already accomplished.

To prevent an uncontained outer combustion case burst, inspect cases in accordance with the requirements of Rolls-Royce SB RB.211-72-7775, dated June 28, 1985, or FAA approved equivalent, as follows:

(a) Inspect cases with 1,500 cycles in service or less since new on the effective date of this AD, prior to accumulating 1,550 cycles in service since new, and reinspect thereafter at intervals as specified in paragraph (c) below.

(b) Inspect cases with greater than 1,500 cycles in service on the effective date of this AD, within the next 50 cycles in service after the effective date of this AD, and reinspect thereafter at intervals as specified in paragraph (c) below.

(c) Reinspect cases previously inspected per paragraph (a) or (b) above as follows:

(1) At intervals not to exceed 500 cycles in service if no cracks are present.

(2) At intervals not to exceed 100 cycles in service if cracks of less than or equal to 0.5 inch in length are present.

(3) At intervals not to exceed 50 cycles in service if cracks of greater than 0.5 inch but less than or equal to 1.5 inches in length are present.

(d) Remove cases from service prior to further flight, if cracks of greater than 1.5 inches in length are present at inspection.

NOTE: The crack length is defined as the length of a single crack or the cumulative length of multiple cracks, whichever is greater.

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, New England Region, Federal Aviation Administration, 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 Parts 21.197 and 21.199 to a base where the AD can be accomplished.

Rolls-Royce SB RB.211-72-7775 dated June 28, 1985, 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 Limited, P.O. Box 31, Derby DE2 8BJ, England.

This document also may be examined at the Office of the Regional Counsel, New England Region, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803, Rules Docket Number 85-ANE-25, Room Number 311, between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday except Federal holidays.

This amendment becomes effective on May 16, 1986.