EASA AD US-2019-03-04
SUPERSEDED BY FAA AD 2019-16-04
Summary
FAA Airworthiness Directive 2019-03-04 is a final rule addressing Engine Alliance GP7270 and GP7277 turbofan engines equipped with engine fan hub assemblies part numbers 5760221 or 5760321. This directive mandates inspections to detect cracks and damage in the engine fan hub assembly to prevent uncontained failures. It applies to all affected engines and supersedes the previous AD 2018-11-16.
What Changed
This AD supersedes AD 2018-11-16 by expanding the population of affected engine fan hub assemblies requiring inspection and revising the compliance times. It removes the GP7272 engine from applicability as it was not manufactured and aligns the applicability with updated Engine Alliance service information. The inspection requirements remain a one-time eddy current and visual inspection with removal of unserviceable parts.
Why It Matters
This directive is critical for aviation professionals to prevent uncontained engine fan hub failures that could cause significant damage to engines and aircraft. Operators and maintenance organizations must ensure compliance to maintain airworthiness and safety. The expanded applicability means more engines are subject to inspection, increasing the scope of required maintenance oversight.
What To Do
Affected operators must perform a one-time eddy current and visual inspection of the engine fan hub blade slot bottom and front edge within 3,000 cycles since new after March 6, 2019, or by August 15, 2019, whichever is later. Any engine fan hub assemblies found with cracks or damage beyond serviceable limits must be removed from service. Comments on the AD are accepted until April 5, 2019.
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