AD 2018-18-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
Cracking in the area between the forward and rear spar attachments of the wing outboard flap tracks could lead to the inability of a principal structural element to sustain required flight loads, and result in loss of the outboard trailing edge flap and consequent reduced controllability of the airplane.
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Required Actions
An inspection to determine the part number of the wing outboard flap track assembly; repetitive inspections of each affected wing outboard flap track for discrepancies, and applicable on-condition actions; and repetitive overhaul of each wing outboard flap track.
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Compliance Time
Within 6 months after the effective date of the final rule, or within 18 months after the effective date of the final rule for flap tracks with known maintenance records and flap tracks that were last overhauled within the last 12 months.
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Affected Aircraft
All The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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