AD 2010-22-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes |
Unsafe Condition
Seven cases of on-ground hydraulic accumulator screw cap/end cap failure have been experienced, resulting in the loss of the associated hydraulic system and high-energy impact damage to adjacent systems and structure.
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Required Actions
Amend the Airplane Flight Manual (AFM), remove the Hydraulic System No. 2 and No. 3 accumulators, and conduct repetitive ultrasonic inspections for cracks on the Hydraulic System No. 1, Inboard Brake, and Outboard Brake accumulators until they are replaced by new accumulators P/N 601R75139-1 (11093-4). Deactivate the hydraulic system No. 3 accumulator.
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Compliance Time
Within 12 months of the effective date (November 4, 2010).
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Affected Aircraft
Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes with accumulators part numbers 601R75138-1 (08-60163-001 or 08-60163-002) and 601R75138-3 (08-60164-001 or 08-60164-002).
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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