AD 2022-18-17
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
a manufacturing error that can create dents on the lower wing plank, close to the flap arm locations at certain wing stations; as a result, cracks could develop and weaken the structural integrity of the wings before being detected by any existing required inspections.
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Required Actions
perform a detailed visual inspection for damage (including dents, cracks, discoloration, gouges, scratches, or other surface damage) of the outer aft lower skin at wing stations (WS) 54.55, WS 128.00, WS 179.00, WS 220.00, and WS 264.00 in accordance with paragraph B., ``Procedure,'' of the Accomplishment Instructions of MHI RJ Aviation Service Bulletin 670BA-57-029, dated February 2, 2021. Do all applicable corrective actions before further flight.
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Compliance Time
Prior to the accumulation of 8,800 total flight hours or within 30 days after the effective date of this AD, whichever occurs later
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Affected Aircraft
MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) Model CL-600-2D24 (Regional Jet Series 900) airplanes, certificated in any category, having serial number 15462 through 15475 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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