EASA AD US-2025-15-01: Fuselage - Frame Web - Repetitive Inspections

What to do

Affected operators must perform repetitive detailed and HFEC inspections of the fuselage frames at stations 312, 328, and 344 within the specified stringer ranges starting no later than August 25, 2025. Any cracks found must be repaired according to Boeing Alert Requirements Bulletin 737-53A1410 RB dated October 11, 2023. Operators should monitor for FAA-approved alternative methods of compliance if considering frame replacement or design changes.

Summary

Fuselage - Frame Web - Repetitive Inspections is a Federal Aviation Administration (FAA) final rule airworthiness directive (AD 2025-15-01) that applies to all Boeing 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD mandates repetitive inspections for cracks in specific fuselage frame webs at stations 312, 328, and 344 between designated stringers, and requires repair of any cracks found. The directive addresses a reported frame web crack that could compromise structural integrity.

What changed

This new AD introduces mandatory repetitive detailed and high frequency eddy current inspections of the frames at specified fuselage stations and stringer ranges. It requires operators to repair any detected cracks to prevent structural failure. The AD clarifies that installation of winglets under STC ST00830SE does not affect compliance and does not reduce the applicability based on Boeing's pending design change.

Why it matters

This AD is critical for maintaining the structural integrity of Boeing 737 Next Generation aircraft by detecting and repairing frame web cracks before they compromise safety. Operators, maintenance organizations, and compliance teams must ensure timely inspections and repairs to avoid potential structural failures. The directive also provides clarity on compliance requirements related to winglet installations and frame replacements.

What to do

Summary

What changed

Why it matters

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