Airworthiness directives › 2024-03-08
AD 2024-03-08 Airworthiness Directives; Bombardier, Inc., Airplanes
Models named: BD-700-1A10, BD-700-1A11. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes, certificated in any category, serial numbers 9002 through 9879 inclusive, 9998, and 60001 and subsequent.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For the purpose of this AD, the definitions specified in paragraphs (g)(1) through (3) of this AD apply. (1) The following Model BD-700-1A10 and BD-700-1A11 airplane groups are identified in (g)(1)(i) through (iv) of this AD: (i) Group A airplanes: serial numbers (S/N) 9002 through 9151 inclusive, and 9153. (ii) Group B airplanes: S/N 9152, 9154 through 9879 inclusive, 9998, 60001 through 60041 inclusive, 60043, 60044, 60045, and 60051. (iii) Group C airplanes: S/N 60042, 60046, 60047, 60049, 60053, and subsequent. (iv) Group D airplanes: S/N 60048, 60050, and 60052. (2) An affected part is a sensing element marked with a date code A0448 through A2104 inclusive and having an LTS/Kidde part number specified in Liebherr Service Bulletin CFD-F1958-26-01, dated May 6, 2022, unless that sensing element meets the criteria specified in paragraph (g)(2)(i) or (ii) of this AD. (i) The sensing element has been tested as specified in Section 3 of the Accomplishment Instructions of Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022, or earlier revisions, and has been found to be serviceable; and the sensing element has been marked on one face of its connector hex nut and packaged as specified in Section 3.C. of the Accomplishment Instructions of Kidde Aerospace and Defense Service Bulletin CFD-26-1, Revision 6, dated February 28, 2022, or earlier revisions. (ii) The sensing element has been tested and found to be serviceable as specified in paragraph (j) of this AD; and the sensing element has been marked on one face of one connector hex nut with one green mark, as specified in Figure 4 (the figure is representative for all sensing elements) in the Accomplishment Instructions of the applicable Bombardier service bulletin (BA SB) in figure 1 to paragraph (g)(2)(ii) of this AD. Figure 1 to Paragraph (g)(2)(ii)—Applicable Service Information BILLING CODE 4910-13-P ER29MR24.003 (3) A serviceable part is a sensing element that is not an affected part.
Unsafe condition
This AD was prompted by reports that some overheat detection sensing elements of the bleed air leak detection system were manufactured with insufficient salt fill. The FAA is issuing this AD to address non-conforming sensing elements of the bleed air leak detection system. The unsafe condition, if not addressed, could result in an inability to detect hot bleed air leaks and consequent damage to surrounding structures and systems, which could prevent continued safe flight and landing.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1