AD 2021-07-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
| aircraft | Bombardier | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes |
Unsafe Condition
WFD, which could adversely affect the structural integrity of the airplane.
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Required Actions
Revising the existing maintenance or inspection program, as applicable, to incorporate additional new or more restrictive airworthiness limitations, and incorporating structural repairs and modifications to preclude WFD. The actions include initial inspections and repetitive inspections of fuselage and longitudinal skin splices at stringers (STR) 6 and 20, and frame splice angles at STR 6 and 20.
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Compliance Time
Before further flight
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Affected Aircraft
MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, serial numbers 10001 through 10158, and 10201 through 10481.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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