AD 2006-17-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes |
Unsafe Condition
Incidents of short circuit failures of certain alternating current (AC) contactors located in the avionics bay.
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Required Actions
Within 800 flight hours or four months after the effective date, perform a general visual inspection of AC service bus contactors 1K4XD and 2K4XD, part number D-18ZZA, and utility bus contactor K4XA, part number D-7GRZ, to determine if they have an Ultem 2200 terminal base plate. Apply RTV sealant to the terminal base plate as applicable, following the Accomplishment Instructions in Bombardier Service Bulletin 601R-24-122, Revision A.
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Compliance Time
Within 800 flight hours or four months after the effective date, whichever occurs first.
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Affected Aircraft
Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers 7003 through 7990 inclusive and 8000 and subsequent.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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