2020-11-14 Prompted By Reports Of The Loss Of All Air Data System Information

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was prompted by reports of the loss of all air data system information provided to the flightcrew, which was caused by icing at high altitudes.

This AD requires revising the existing airplane flight manual (AFM) to provide the flightcrew with procedures to stabilize the airplane's airspeed and attitude. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective July 21, 2020.

Supplementary Information: Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian AD CF-2019-24, dated July 5, 2019 (referred to after this as the Mandatory Continuing Airworthiness Information, or “the MCAI”), to correct an unsafe condition for certain Bombardier, Inc., Model BD-100-1A10 airplanes. You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2019-1081.

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain Bombardier, Inc., Model BD-100-1A10 airplanes. The NPRM published in the Federal Register on January 27, 2020 (85 FR 4614). The NPRM was prompted by reports of the loss of all air data system information provided to the flightcrew, which was caused by icing at high altitudes. The NPRM proposed to require revising the existing airplane flight manual (AFM) to provide the flightcrew with procedures to stabilize the airplane's airspeed and attitude. The FAA is issuing this AD to address the loss of all air data system information provided to the flightcrew. If not addressed, this condition may adversely affect continued safe flight and landing.

FMI: www.regulations.gov