Airworthiness Directive · Amendment 39-22600 · Pneumatic
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes, certificated in any category, serial numbers 5580 through 5665 inclusive, 5701 through 5988 inclusive, and 6050 and subsequent.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes. This AD was prompted by reports from the supplier that sensing elements of the bleed air leak detection system were manufactured with insufficient salt fill, which can result in an inability to detect hot bleed air leaks. This AD requires testing of all affected overheat detection sensing elements of the bleed air leak detection system, and replacement if necessary. This AD also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.
For the purposes of this AD, the definitions specified in paragraphs (g)(1) and (2) of this AD apply.
(1) Affected part: A sensing element marked with a date code before A2105 and having a part number listed in Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022; unless the sensing element meets the conditions specified in paragraphs (g)(1)(i) and (ii) of this AD, or has passed the test specified in paragraph (h) of this AD.
(i) Has been tested in accordance with the Accomplishment Instructions of Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022, and passed the test; and
(ii) Has been marked on one face of its connector hex nut in accordance with paragraph 3.C., Identification Procedure, of Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022.
(2) Serviceable part: A sensing element that is not an affected part.
For airplane serial numbers 5580 through 5665 inclusive, 5701 through 5988 inclusive, and 6050 through 6174 inclusive: Within 7,800 flight cycles or 96 months, whichever occurs first, from the effective date of this AD, test the bleed air leak detection system sensing elements to determine if they are serviceable, in accordance with the Accomplishment Instructions of the applicable service information identified in paragraphs (h)(1) through (3) of this AD. If the sensing element is found serviceable, before further flight, mark the sensing element with a green mark in accordance with the Accomplishment Instructions of the applicable service information identified in paragraphs (h)(1) through (3) of this AD. If the sensing element is found not serviceable, before further flight, replace the sensing element with a serviceable part in accordance with the Accomplishment Instructions of the applicable service information identified in paragraphs (h)(1) through (3) of this AD.
(1) For Model CL-600-2B16 airplanes, serial numbers 5580 through 5665 inclusive (Challenger 604): Use Bombardier Service Bulletin 604-36-005, dated December 23, 2022.
(2) For Model CL-600-2B16 airplanes, serial numbers 5701 through 5988 inclusive (Challenger 605): Use Bombardier Service Bulletin 605-36-002, dated December 23, 2022.
(3) For Model CL-600-2B16 airplanes, serial numbers 6050 through 6174 inclusive (Challenger 650): Use Bombardier Service Bulletin 650-36-001, dated December 23, 2022.
