Airworthiness Directive · Amendment 39-17976 · Fire protection
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model BD-700-1A10 and BD-700-1A11 airplanes, certificated in any category, serial numbers 9002 through 9500 inclusive, and 9998.
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by reports of an incorrectly assembled check tee fitting used in fire extinguishing (FIREEX) distribution lines. This AD requires inspecting to determine the part number and for all affected check tee fittings measuring for correct depth, and replacing if necessary. We are issuing this AD to detect and correct faulty check tee fittings, which will reduce fire extinguishing protection.
Within 100 flight hours or 180 days, whichever occurs first after the effective date of this AD, inspect to determine the part number (P/N) of the FIREEX check tee fitting, in accordance with the Accomplishment Instructions of the applicable service bulletin identified in paragraph (g)(1), (g)(2), (g)(3), or (g)(4) of this AD.
(1) Bombardier Alert Service Bulletin A700-1A11-26-003, dated April 18, 2013 (for Model BD-700-1A11 (BD-700) airplanes having S/Ns 9127 through 9383 inclusive; 9389 through 9400 inclusive, 9404 through 9431 inclusive, and 9998).
(2) Bombardier Alert Service Bulletin A700-26-010, dated April 18, 2013 (for Model BD-700-1A10 (BD-700) airplanes having S/Ns 9002 through 9312 inclusive, 9314 through 9380 inclusive, and 9384 through 9429 inclusive).
(3) Bombardier Alert Service Bulletin A700-26-5002, dated April 18, 2013 (for Model BD-700-1A11 (BD-700) airplanes having S/Ns 9386, 9401, and 9445 through 9498 inclusive).
(4) Bombardier Alert Service Bulletin A700-26-6002, dated April 18, 2013 (for Model BD-700-1A10 (BD-700) airplanes having S/Ns 9313, 9381, and 9432 through 9500 inclusive).
If any inspection specified in paragraph (g) of this AD reveals any check tee fitting having P/N 446651 and S/N 062 through 070 inclusive, 117 through 133 inclusive, 3728 through 3731 inclusive, 3733 through 3760 inclusive, or 3762 through 3776 inclusive: Within 100 flight hours or 180 days, whichever occurs first after the effective date of this AD, measure the depth of the inlet fitting of the check tee, in accordance with the Accomplishment Instructions of the applicable service bulletin identified in paragraph (g)(1), (g)(2), (g)(3), or (g)(4) of this AD. If the check tee depth is less than 1.70 inches (4.32 cm), before further flight, replace the check tee in accordance with the Accomplishment Instructions of the applicable service bulletin identified in paragraph (g)(1), (g)(2), (g)(3), or (g)(4) of this AD.
