AD 2021-05-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
unwanted lateral oscillations during landing operations, which could cause over-control of the airplane and subsequent lateral pilot induced oscillation, which could affect continued safe flight and landing.
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Required Actions
repetitive operational tests of the spoiler inhibit function, installing a new relay bracket assembly, making changes to the wire bundles for certain SCMs, installing new SCMs, measuring the clearance between a wire bundle and the top of the new relay bracket assembly, and applicable on-condition actions, including installing a new protective sleeve, heat shrinkable to the wire bundle, doing a landing configurations warning module landing flap tests, and doing a system test for the SCMs.
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Compliance Time
Within 50 flight hours
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Affected Aircraft
The Boeing Company Model 757 airplanes, 626 airplanes of U.S. registry.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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