Commonwealth legislation

AD/RRT-S/8 - Combustion Section - Primary Airscoop

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Commonwealth

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legislative instrument

Plain English Summary

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This airworthiness directive requires operators of specified Rolls‑Royce Spey engines to follow Rolls Royce Service Bulletin Sp 72‑997 to upgrade the primary air scoop overhaul standard (Requirement: Rolls Royce S.B. Sp 72‑997). It applies to the listed Spey variants and must be done at the next engine overhaul or whenever the engine is opened enough to access the scoops (Compliance clause). Engine owners/operators pay for and arrange the overhaul work; maintainers carry out the specified overhaul standard.

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AD/RRT-S/8 - Combustion Section - Primary Airscoop

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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Rolls Royce Turbine Engines - Spey Series

AD/RRT-S/8 Combustion Section - Primary Airscoop 12/85

Applicability: SPEY 506-14, 506-14A, 506-14D, 511-5W, 511-8, 511-14, 511-14W, 512-14E, 512-14DW, 512-5, 512-5W, 555-15, 555-15H, 555-15N, 555-15P.

Requirement: ROLLS ROYCE S.B. Sp 72-997.

Compliance: At next engine overhaul or when the engine is disassembled sufficiently to allow access to the primary air scoops.

Background: Rolls Royce advise there has been as incident where a primary air scoop failure resulted in flame penetration of the engine major casings and the engine cowling. This Directive requires compliance with Rolls Royce S.B. Sp 72-997 which details an improved standard of primary air scoop overhaul.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.