Fuselage - Frame Webs - Inspection
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Boeing 737 models must perform the required high frequency eddy current inspections within 120 days of the directive's effective date for Group 1 airplanes, and at specified intervals for other groups as detailed in Boeing Alert Requirements Bulletin 737-53A1371 RB dated January 19, 2018. Any detected cracks must be repaired using FAA-approved methods. Installation of STC ST01219SE does not require additional approval for compliance.
Summary
The Federal Aviation Administration's Airworthiness Directive 2018-16-09 addresses all Boeing 737-100, -200, -200C, -300, -400, and -500 series airplanes. This directive mandates repetitive high frequency eddy current inspections of fuselage frame webs at specific stations near the overwing emergency exits to detect cracks. The directive aims to ensure continued structural integrity and prevent rapid decompression.
What changed
This new airworthiness directive introduces mandatory repetitive inspections for cracks on fuselage frame webs between stringers S-7 and S-8 at stations forward and aft of the overwing emergency exits. It also requires applicable repairs if cracks are found. Additionally, it clarifies that installation of Supplemental Type Certificate STC ST01219SE does not affect compliance with the directive.
Why it matters
This directive is critical for aviation professionals as it addresses a structural safety concern that could lead to rapid decompression and loss of airplane integrity. Operators and maintenance organizations must incorporate these inspections into their maintenance programs to ensure airworthiness. Compliance helps prevent potential in-service failures and enhances passenger safety.
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