Airworthiness Directive · Amendment 39-21745 · Fuselage
Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
This AD applies to the Airbus Canada Limited Partnership (type certificate previously held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) airplanes identified in paragraphs (c)(1) and (2) of this AD, certificated in any category.
(1) Model BD-500-1A10 airplanes, having serial number (S/N) 50001 through 50018 inclusive, and 50020 through 50055 inclusive.
(2) Model BD-500-1A11 airplanes, having S/N 55001 through 55016 inclusive, 55018 through 55068 inclusive, 55070 through 55083 inclusive, 55086 through 55088 inclusive, and 55090.
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This AD was prompted by a report that following an in- service engine shutdown during taxi, water was found to be dripping into the forward avionics bay; the water caused a short circuit and tripped a circuit breaker. This AD requires replacing the forward galley slotted drain covers with solid blanking plates and modifying the associated drain tubing to block water. The FAA is issuing this AD to address the unsafe condition on these products.
Within 12 months after the effective date of this AD, replace the forward galley slotted drain covers with solid blanking plates and modify the associated drain tubing to block water, in accordance with paragraph 2, “Procedure,” of the Accomplishment Instructions of Airbus Canada Limited Partnership Service Bulletin BD500-530009, Issue 001, dated July 31, 2020.
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.
