AD 2025-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company | Airworthiness Directives; The Boeing Company Airplanes |
Unsafe Condition
two engine fan blade-out (FBO) events that resulted in the separation of engine inlet cowl and fan cowl parts from the airplane, potentially damaging a stabilizer or the fan cowl striking the fuselage and window
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Required Actions
replace the fasteners on the fan cowl support beam hinge fittings on the left and right engine strut, modify the radial restraint assembly and install an external doubler at the starter vent, or as an option, install a serviceable fan cowl
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Compliance Time
within the compliance times specified in the "Compliance" paragraph of Boeing Special Attention Requirements Bulletin 737-71-1937 RB, Revision 1, dated June 27, 2024
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Affected Aircraft
all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes, certificated in any category
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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