Proposed ADEASA PAD 26-137

Engine – Low Pressure Compressor Blades – Inspection / Replacement

Proposal for consultation. Not binding until EASA issues the final AD; the requirements can still change.

Published: Nov 12, 2026
Would replace: 2025-0143

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators must inspect affected low pressure compressor blades on Trent 1000 engines according to the timelines specified in Rolls-Royce NMSB TRENT 1000 72-AK965 and replace any blades that do not meet acceptance criteria. Inspections must be completed within 30 days after the effective dates of previous ADs or before exceeding specified compliance dates. Only serviceable parts, including inspected or approved blades, may be installed from the effective date of this directive.

Summary

EASA Airworthiness Directive PAD No. 26-137 is a proposed directive addressing inspection and replacement requirements for low pressure compressor blades on Rolls-Royce Trent 1000 engines installed on Boeing 787 aircraft. The directive applies to multiple Trent 1000 engine models and focuses on blades with specific part numbers and serial numbers identified in Rolls-Royce service bulletins. It aims to ensure continued airworthiness by mitigating risks associated with blade cracking.

What changed

This proposed directive supersedes EASA AD 2025-0143 and expands the population of affected low pressure compressor blades requiring inspection and possible replacement. It introduces additional blade serial numbers at risk of cracking and updates compliance requirements accordingly. The directive retains previous inspection and replacement mandates while broadening the scope to include newly identified affected parts.

Why it matters

This directive is critical for aviation professionals as it addresses a safety risk that could lead to uncontained engine failures and potential in-flight shutdowns, impacting aircraft control and safety. Operators and maintenance organizations must ensure compliance to prevent engine damage and maintain regulatory approval. The expanded scope requires updated tracking and inspection of additional engine parts, affecting maintenance planning and parts management.

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