What is the maximum altitude for autopilot operation?

The maximum altitude for autopilot operation in the CRJ 900 is 41,000 feet. This limitation is established to ensure safe flight operations and manage the aircraft's performance and handling characteristics. At altitudes above this limit, the autopilot may not be able to maintain stable flight due to decreased atmospheric pressure and changes in aircraft performance. Operating within the specified altitude limit allows for optimal aircraft handling, reliability of onboard systems, and compliance with aviation regulations, thus enhancing safety for all onboard.