AD 92-07-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-300 Series | Airworthiness Directives; BOEING Model 737-300 Series Airplanes |
Unsafe Condition
Gaps, holes, or voids in the firewall sealant of the engines' nacelle strut door assemblies could compromise the integrity of the nacelle strut firewall.
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Required Actions
Inspect the engines' nacelle strut door assemblies for proper firewall sealant application per Boeing Service Bulletin 737-54-1028, Revision 1. If gaps, holes, or voids exist, apply sealant prior to further flight. Use alternative methods or compliance times if approved by the FAA.
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Compliance Time
Within 8,000 flight hours after May 14, 1990 (for paragraph (a)) or within 8,000 flight hours after the effective date of this AD (April 28, 1992) (for paragraph (b)), whichever occurs sooner, or at the next scheduled engine removal.
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Affected Aircraft
BOEING Model 737-300 series airplanes listed in Boeing Service Bulletin 737-54-1028, Revision 1, dated July 11, 1991.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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