EASA AD US-2018-16-07: Superseded by FAA AD 2019-02-01

What to do

Operators of affected GE GEnx engines must remove and replace the specified HPT stator cases with approved parts by August 15, 2018, the effective date of this AD. They should consult the referenced GE Service Bulletins for detailed procedures and verify engine serial numbers against the affected list. Comments on the AD are accepted until September 14, 2018, but compliance is mandatory from the effective date.

Summary

FAA Airworthiness Directive 2018-16-07 is a final rule addressing certain General Electric GEnx turbofan engines, including models GEnx-1B54 through GEnx-2B67 variants, equipped with specific high-pressure turbine (HPT) stator cases. This directive mandates the removal and replacement of affected HPT stator cases due to unapproved weld repairs discovered at a manufacturing facility. The AD aims to prevent potential engine failure, fire, and consequent damage to the airplane.

What changed

This new airworthiness directive introduces mandatory removal of HPT stator cases with unapproved weld repairs and requires their replacement with parts eligible for installation. It applies to engines with specific part and serial numbers listed in GE Service Bulletins GEnx-1B S/B 72-0424 and GEnx-2B S/B 72-0360, both revised on June 29, 2018. The AD was issued without prior public comment due to the urgent safety risk identified.

Why it matters

This AD is critical for aviation professionals because it addresses a safety risk that could lead to engine failure and fire, impacting flight safety and aircraft operability. Operators and maintenance organizations must ensure compliance to avoid unplanned engine removals or in-flight emergencies. Compliance also ensures adherence to FAA regulatory requirements and prevents potential regulatory penalties.

What to do

Summary

What changed

Why it matters

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