What is the maximum speed for retracting flaps on the CRJ 900?

The maximum speed for retracting flaps on the CRJ 900 is indeed 200 knots. This limitation is critical to ensure safe aerodynamic performance and to protect the flap mechanism from potential damage that can occur if they are retracted at excessive speeds.

When the flaps are retracted, they can create significant aerodynamic forces. If this process occurs above the specified maximum speed, it could lead to aerodynamic issues such as increased drag, or in extreme cases, structural failure of the flap system. The proper flap retraction speed ensures that the aircraft remains stable and controllable during the transition from a lower drag configuration (with flaps extended) to a higher performance setting (with flaps retracted) without endangering the aircraft's integrity or the safety of its operation.