AD 2013-09-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Reports indicate that the work sequence and procedures used during installation of replacement tracks could cause loose or cracked tracks, leading to cracking and damage in the flap track. This could result in loss of the outboard trailing edge flap and reduced controllability of the airplane.
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Required Actions
Inspect the flap track of the wing outboard flap for cracking and damage, and perform corrective actions if necessary. Schedule overhauls, ensure correct alignment during installation, and conduct repetitive maintenance of the flap track. For certain airplanes, rework the flap track assembly and rear spar attachments.
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Compliance Time
Within 180 days of the effective date
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Affected Aircraft
The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes, including those with STC ST01219SE installed.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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