AD 2014-05-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Improper insertion of a Printed Circuit Board (PCB) in a Direct Current Power Center (DCPC) may lead to erroneous electrical status indications on the Push Button Annunciators (PBA) and the Engine Instrument & Crew Alerting System (EICAS). Erroneous indications could mislead pilots into turning off active generators, leading to partial or complete loss of electrical power, which could result in the loss of flight displays and reduced controllability of the airplane.
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Required Actions
Modify the left-hand DCPC, right-hand DCPC, and auxiliary DCPC in accordance with Bombardier Service Bulletin 100-24-23. Ensure that no person installs a DCPC with specified part numbers unless the serial number has a suffix 'R'.
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Compliance Time
Within 800 flight hours after the effective date of this AD or within 24 months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Bombardier, Inc. Model BD-100-1A10 (Challenger 300) airplanes, certificated in any category, serial numbers 20003 and subsequent.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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