Bombardier (Canadair) CL-600 (Challenger
Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes
Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes
| AD/CL-600/81 | Vertical Beams on Pressure Bulkheadsat FS 409+128 and FS 559 | 9/2007 |
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| Applicability: | Model CL-600-2B19 aircraft, serial numbers 7003 through 7999. |
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| Requirement: | Action in accordance with the requirements of Transport Canada AD CF-2003-08. |
| Compliance: | As specified in the Requirement document, with a revised effective date of30 August 2007. |
| This Airworthiness Directive becomes effective on 30 August 2007. | |
| Background: | Cracks were detected on the vertical beams on pressure bulkheads at fuselage stations 409+128 and 559 on several Regional Jet in-service aircraft. Failure of the vertical beams at the pressure bulkheads, which have been identified as principal structural element, would compromise the structural integrity of the pressure bulkheads. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
11 July 2007