AD 94-26-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
| aircraft | The Boeing Company | 737-500 Series | Airworthiness Directives; Boeing Model 737-300, -400, and -500 Series Airplanes |
Unsafe Condition
Fuel leaking from the fuel line at Front Spar Station (FSS) 250.663 flows through a drain hole in a slat access panel and leaks into the turbine exhaust area, which could cause an external fire under the wing.
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Required Actions
Modify the leading edge slat access panel and internal structure at FSS 250.663 by sealing the drain hole in Slat Access Panels 6307L and 6407R, changing the internal structure to create a drain path to the strut drain system, and sealing the slat access panel and internal structure to keep fuel leakage within the new drain path.
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Compliance Time
before further flight
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Affected Aircraft
Boeing Model 737-300, -400, and -500 series airplanes with line positions 2184, 2187, 2194 through 2197 inclusive, and 2199.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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