Airworthiness Directive · Amendment 39-21649 · Flight control system
Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
This AD applies to Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11 airplanes, certificated in any category, as identified in Transport Canada Civil Aviation (TCCA) AD CF-2020-36, dated October 8, 2020 (TCCA AD CF-2020-36).
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 reports of deficiencies in the primary flight control computer (PFCC) software and the remote electronics unit (REU) software. This AD requires installation of a software update to correct deficiencies in the PFCC and REU software, as specified in a Transport Canada Civil Aviation (TCCA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, TCCA AD CF-2020-36. The prerequisites specified in the service information referenced in TCCA AD CF-2020-36 must be met prior to accomplishing the required actions.
(1) Where TCCA AD CF-2020-36 refers to its effective date, this AD requires using the effective date of this AD.
(2) The compliance time for the actions required by paragraph (g) of this AD is the earliest of the times specified in paragraphs (h)(2)(i) through (iii) of this AD.
(i) Prior to the accumulation of 12,000 total flight hours.
(ii) Within 56 months after the effective date of this AD.
(iii) Within 9,350 flight hours after the effective date of this AD.
(3) Where TCCA AD CF-2020-36 specifies installing software updates on the PFCCs using a USB-type device, this AD also allows the use of a portable maintenance access terminal (PMAT)-type device.
Note 1 to paragraph (h)(3): When using a PMAT-type device, guidance for upgrading the software can be found in Airbus Canada Service Bulletin (SB) BD500-270013, Issue 001, dated July 17, 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.
