AD 99-21-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier Inc. | CL-600-2B19 (Regional Jet Series 100) | Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100) Series Airplanes |
Unsafe Condition
Damage of the input connectors and wiring of the main and auxiliary power unit (APU) battery chargers could increase the risk of a short circuit and consequent electrical smoke or fire in the aft fuselage.
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Required Actions
Inspect input connectors and wire harnesses for the main and APU battery chargers, repair or replace damaged parts before further flight, install heat shrink tubing and ty-rap on spin coupling rings. Additionally, install external resistors or new batteries with internal resistors for specified serial numbers.
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Compliance Time
Within 450 flight hours after the effective date (November 12, 1999)
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Affected Aircraft
Bombardier Model CL-600-2B19 (Regional Jet Series 100) serial numbers 7003 through 7067 inclusive and 7069 through 7250 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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