AD 98-19-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 757-200 Series | Airworthiness Directives; Boeing Model 757-200 Series Airplanes |
| aircraft | The Boeing Company | 757-200CB Series | Airworthiness Directives; Boeing Model 757-200 Series Airplanes |
| aircraft | The Boeing Company | 757-200PF Series | Airworthiness Directives; Boeing Model 757-200 Series Airplanes |
Unsafe Condition
Failure to apply the secondary fuel barrier during manufacture could result in fuel or fuel vapors entering the cargo or passenger compartment through fasteners, sealant, or structural cracks in the center section structure.
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Required Actions
Apply sealant, secondary fuel barrier (BMS 5-81, Type II), and corrosion-inhibiting compound to specified portions of the wing center section as per Boeing Service Bulletin 757-57-0053 or its revision.
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Compliance Time
at the next scheduled heavy maintenance check (i.e., a '4C' check) or within 48 months after the effective date of the AD, whichever occurs first
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Affected Aircraft
Boeing Model 757-200 Series, 757-200CB Series, 757-200PF Series airplanes where the secondary fuel barrier was not applied during manufacture.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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