FAA has proposed an airworthiness directive for all 680 U.S.-registered Bombardier BD-100-1A10 aircraft

The FAA has proposed an airworthiness directive for all 680 U.S.-registered Bombardier BD-100-1A10 aircraft (Challenger 300, 350 and 3500) that would make the AP STAB TRIM FAIL procedure an emergency procedure after reports of pitch upset events; comments are open until 29 October 2026 (GlobalAir.com, via NBAA Daily, 14 October 2026). Source: https://www.globalair.com/articles/challenger-300-350-and-3500-trim-alert-could-become-an-emergency-procedure/12752