AD 98-03-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 757-200 Series | Airworthiness Directives; Boeing Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-200CB Series | Airworthiness Directives; Boeing Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-200PF Series | Airworthiness Directives; Boeing Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-300 Series | Airworthiness Directives; Boeing Model 757 Series Airplanes |
Unsafe Condition
Chafing of wire bundles due to missing protective grommets could result in smoke and fire at the E1-1 rack of the electrical equipment bay.
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Required Actions
Within 6 months after the effective date, perform one-time inspections to verify proper installation and detect chafing/damage of wire bundles (P/N W4508, W2608, W2604); verify proper installation and detect missing protective grommets; and install a protective grommet on the upper edge of intercostal R-23L if missing. Repair detected chafing/damage per Boeing Standard Wiring Practices Manual 20-10-13. Adjust improperly installed wire bundles per Manual 20-10-11. Replace or install missing grommets per applicable service bulletins.
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Compliance Time
Within 6 months after the effective date of this AD, accomplish paragraphs (a)(1), (a)(2), and (a)(3) of this AD.
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Affected Aircraft
Boeing Model 757 series airplanes with accomplished Boeing Alert Service Bulletin 757-24A0025 or Service Bulletin 757-24A0025, Revision 1, excluding variable numbers NA003, NA004, NA007, NA009, NA010, NA012-NA016, and NA021.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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