Airworthiness Directive · Amendment 39-16060 · Airborne auxiliary power
Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2D15 (Regional Jet Series 705), and CL-600-2D24 (Regional Jet Series 900) Airplanes
This AD applies to the airplanes, certificated in any category, identified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), serial numbers 10112 through 10199 inclusive, and 10201 through 10206 inclusive.
(2) Bombardier Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900), serial numbers 15007 through 15026 inclusive, 15030, and 15031.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions:
(1) Within 1,500 flight hours after the effective date of this AD, inspect the ASCA box to determine the part number and, for ASCA boxes having part number (P/N) BA670-53328-1 or BA670-53328-951, perform a detailed inspection of the fuse block date code, in accordance with Bombardier Service Bulletin 670BA-49-012, Revision A, dated August 28, 2008. Before further flight, replace all fuse blocks that have a date code between K23 (0323) through M08 (0508) inclusive, in accordance with Bombardier Service Bulletin 670BA-49-012, Revision A, dated August 28, 2008. A review of airplane maintenance records is acceptable in lieu of the inspection to determine the part number of the ASCA boxes if the part number of the ASCA boxes can be conclusively determined from that review.
(2) Inspections and replacement actions are also acceptable for compliance with the requirements of paragraph (f)(1) of this AD, if done before the effective date of this AD in accordance with Bombardier Service Bulletin 670BA-49-012, dated June 28, 2007.
Note 1: This AD differs from the MCAI and/or service information as follows: No differences.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
