AD 2021-01-01
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
structural life limits that are lower than the life limits published in the Maintenance Requirements Manual (MRM), Part 2, could lead to the collapse of the affected nose landing gear (NLG) and/or main landing gear (MLG), possibly resulting in airplane damage and injury to the occupants.
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Required Actions
Verify the airplane or technical records to determine if an NLG or MLG component listed in Table 1 or Table 2 of Bombardier Service Bulletin 601R-32-112, dated November 11, 2019, is installed on the airplane. If this verification determines that an affected component listed in Table 1 or Table 2 of Bombardier Service Bulletin 601R-32-112, dated November 11, 2019, is installed on the airplane, perform the actions specified in the service bulletin. The actions include revising the structural life limits in the existing structural deviation inspection requirements (SDIR) airplane document and replacing affected components if necessary.
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Compliance Time
Within 6 months from the effective date of this AD
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Affected Aircraft
MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers 7003 through 8999 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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