Airbus Canada Planes Face Grounding Over Faulty Air Pressure Motors
Published Date: 4/2/2026
Rule
Summary
If you fly Airbus Canada Limited Partnership Model BD-500-1A10 or BD-500-1A11 planes, listen up! The FAA found a problem with a motor that controls air pressure, which could cause safety issues. Starting April 17, 2026, certain flights can’t take off if this motor or related alerts aren’t working right, so operators need to check carefully to keep everyone safe.
Analyzed Economic Effects
4 provisions identified: 0 benefits, 4 costs, 0 mixed.
Risk of Cabin Pressure Control Loss
The AD states that the outflow valve (OFV) DC motor could be inoperative in high differential pressure conditions, which could lead to total loss of cabin pressure control, excessive differential pressure on the airplane structure, inability to rapidly depressurize to ambient, and inability to evacuate smoke when needed. This describes the safety hazard that prompted the dispatch prohibitions.
Grounding When "AUTO PRESS FAIL" Displays
Starting April 17, 2026, you may not dispatch any Airbus Canada BD-500-1A10 or BD-500-1A11 airplane if the crew alerting system (CAS) message "AUTO PRESS FAIL (CAUTION)" is displayed. That means operators must take the airplane out of service whenever that CAS message appears before a flight may depart.
Prohibited Dispatch Under MMEL Procedures
As of April 17, 2026, operators may not dispatch BD-500-1A10 or BD-500-1A11 airplanes under the specific operational procedures in MMEL items 21-33-03 and 21-33-04 listed in the AD. The prohibited procedures include operating with pressurization in manual (MAN) mode with autopilot operative only when operations would be restricted to airports at or below 8,000 ft landing field elevation (LFE) under those MMEL sequences.
Estimated Compliance Cost for U.S. Operators
The FAA estimates this AD affects 198 U.S.-registered airplanes and that required compliance will take 1 work-hour at $85 per airplane, costing $85 per airplane and $16,830 total to U.S. operators. The FAA lists parts cost as $0 for the required action in this AD.
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