AD 95-09-01
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
Failure of the fireproof insulation topcoat installed on the firewalls for the thrust reverser fan cowls, which can result in degradation or loss of the firewall and lead to an uncontained engine fire.
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Required Actions
Within 30 months after the effective date, inspect the inner wall of the fan duct cowl (firewall) of the thrust reversers to determine the type of topcoat material installed. If the existing topcoat does not have silica fibers, apply the DC92-010 topcoat prior to further flight.
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Compliance Time
Within 30 months after the effective date of this AD
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Affected Aircraft
Boeing Model 737-300, -400, and -500 series airplanes; line numbers 2137 through 2271, inclusive; certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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