AD 2012-08-15 Airworthiness Directives; Bombardier, Inc. Airplanes

This AD applies to Bombardier, Inc. Model CL-600-2B16 (CL-604 Variant) airplanes, certificated in any category, serial numbers 5701 through 5752 inclusive, 5754 through 5775 inclusive, 5777, 5779 through 5781 inclusive, 5783 through 5790 inclusive, 5792, 5794 through 5796 inclusive, 5798, 5801, and 5804.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.

For airplanes having serial numbers 5701 through 5752 inclusive, 5754 through 5775 inclusive, 5777, 5780 through 5781 inclusive, 5783 through 5790 inclusive, 5792, 5794 through 5796 inclusive, 5798, 5801, and 5804: Within 800 flight hours after the effective date of this AD, do the actions in paragraphs (g)(1), (g)(2), and (g)(3) of this AD, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 605-24-004, dated January 18, 2010. (1) Do a detailed inspection in circuit breaker panel (CBP) CBP-1 for loose lugs and for crimped lugs that have any of the conditions specified in step 2.B.(9)(d) of Bombardier Service Bulletin 605-24-004, dated January 18, 2010. Before further flight, replace all loose lugs and all crimped lugs in CBP-1 that have any of the conditions specified in Step 2.B.(9)(d) of Bombardier Service Bulletin 605-24-004, dated January 18, 2010. (2) Relocate or replace the CBP-1 bus bars as applicable. (3) Do a general visual inspection for foreign object damage (FOD). If any FOD is found: Before further flight, remove the FOD.

This AD was prompted by multiple reports of short circuit events during pre-delivery inspections and test flights, one of which resulted in smoke in the cockpit. We are issuing this AD to prevent arcing, damage to adjacent structure, smoke in the cockpit, or loss of system redundancies.

None.