EASA AD 2026-0190 — Engine Oil – Oil Pump – Operational Prohibition

Summary

EASA Airworthiness Directive 2026-0190 is an operational prohibition directive affecting Rolls-Royce Deutschland RB211 Trent 800 series engines, specifically models 895-17, 892-17, 892B-17, 884-17, 884B-17, 877-17, and Trent 875-17 installed on aircraft such as the Boeing 777. The directive addresses oil pump issues related to certain part numbers that could lead to low oil pressure and potential dual in-flight engine shutdowns. It mandates restrictions on the installation and operation of affected oil pumps to ensure continued airworthiness.

What Changed

This AD supersedes the earlier EASA AD 2026-0173-E and expands the list of affected oil pump part numbers while increasing the life threshold for oil pumps from 135 to 400 flight hours. It introduces a prohibition on operating twin-engine aircraft with affected oil pumps installed on both engines and restricts installation to only serviceable oil pumps as defined in the directive. The directive also requires rectification of affected parts at approved maintenance facilities.

Why It Matters

This directive is critical for aviation professionals as it prevents potential dual engine failures caused by oil pump input-coupling shear neck failures, which could compromise aircraft control. Operators and maintenance organizations must ensure compliance to avoid unsafe conditions and regulatory penalties. The directive impacts engine maintenance, parts management, and operational planning for affected aircraft fleets.

What To Do

Operators must ensure that from 7 days after 15 October 2026, no twin-engine aircraft operates with affected oil pumps installed on both engines; one engine must have a serviceable oil pump. Installation of oil pumps and engines is only permitted if the parts are serviceable according to the AD. Replacement of affected parts with serviceable parts must follow approved Rolls-Royce maintenance instructions to comply with the directive.