AD 2025-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
inlet cowls that are not strengthened, which could, in the event of an FBO occurrence, depart the airplane potentially damaging the airframe structure or striking the fuselage and windows.
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Required Actions
replacing specified inlet cowl aft bulkhead fasteners for certain airplanes; for certain other airplanes, inspecting the inlet cowl aft bulkhead fastener and replacing the fasteners if rivets are found, and, for all airplanes, replacement of the crushable spacers used in the attachment of the inlet cowl to the engine fan case; or as an option, installing a serviceable inlet cowl.
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Compliance Time
Before further flight
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Affected Aircraft
all Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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