AD 87-18-07

87-18-07 ROLLS-ROYCE plc (formerly Rolls-Royce Limited): Amendment 39-5689. Applies to Rolls- Royce (R-R) Spey 506-14, 506-14A, 506-14D, 511-5W, 511-14, 511-14W, 511-8, 511-8/Mod. 2970, 512-14E, 512-14DW, 512-5, 512-5W, 555-15, 555-15H, 555-15N, and 555-15P turbofan engines.

Compliance is required as indicated, unless already accomplished.

To prevent failure of the primary airscoop and subsequent burnthrough of the engine case, inspect for cracks, and repair or replace as necessary, the primary airscoops in accordance with R-R Service Bulletin (SB) Number SP72-997, dated October 1985, at the next engine shop visit after the effective date of this AD.

NOTE: For the purpose of this AD, engine shop visit is defined as the input of an engine to a repair shop where combustion section system overhaul facilities exist and the subsequent engine maintenance entails the separation of front and rear.

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

Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Engine Certification Office, 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.

R-R SB Number SP72-997, dated October 1985, identified and described in 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 Service Manager, Spey Engine, Rolls-Royce plc, East Kilbride, Glasgow G74 4PY, Scotland. This document may also 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 86-ANE-24, Room 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 September 28, 1987.