AD Amdt-39-10938

Recurring final rule
Data completeness: 70%

Airworthiness Directives; Boeing Model 757-200 Series Airplanes Powered by Rolls-Royce RB211-535E4/E4B Engines

AD Number
Amdt-39-10938
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. 97-NM-311-AD
FR Citation
63 FR 68669

Applicability

TypeManufacturerModelDetails
aircraft Boeing 757-200 Airworthiness Directives; Boeing Model 757-200 Series Airplanes Powered by Rolls-Royce RB211-535E4/E4B Engines
engine Rolls-Royce RB211-535E4/E4B Airworthiness Directives; Boeing Model 757-200 Series Airplanes Powered by Rolls-Royce RB211-535E4/E4B Engines

Unsafe Condition

Cracking of the honeycomb core of the acoustic panels in the engine inlet, which could result in reduced structural integrity of the engine inlet, and consequent engine shutdown or surge; or, in the event of a fan blade failure, separation of the inlet from the engine.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Conduct repetitive inspections to detect cracking of the honeycomb core of the acoustic panels in the engine inlet, and repair if necessary. Eventually replace the existing engine inlet with a new or serviceable inlet, which terminates the repetitive inspections.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 50 flight hours after the effective date of the AD.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Boeing Model 757-200 series airplanes powered by Rolls-Royce RB211-535E4/E4B engines.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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