AD 90-15-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300 and 737-400 Series Airplanes |
| aircraft | The Boeing Company | 737-400 Series | Airworthiness Directives; BOEING Model 737-300 and 737-400 Series Airplanes |
Unsafe Condition
Fire hazard associated with a fuel leak due to the fuel tube assembly chafing against the adjacent wing/strut structural brace.
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Required Actions
Inspect the left engine fuel feed tube assembly for proper clearance and chafing in accordance with Boeing Service Bulletin 737-28-1055 Revision 1. If inadequate clearance is found, replace the fuel tube with a serviceable one per Boeing Service Bulletin 737-28-1084 and verify minimum clearance. Alternatively, replace the fuel tube and verify clearance as specified in the service bulletins.
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Compliance Time
within three months after the effective date of this AD, unless previously accomplished
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Affected Aircraft
BOEING Model 737-300 and 737-400 series airplanes listed in Boeing Service Bulletin 737-28-1084 dated September 14, 1989
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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