What is the maximum allowable bank angle for steep turns?

The maximum allowable bank angle for steep turns in the ERJ 170/175 is 30 degrees. This limitation is established to maintain control of the aircraft while ensuring that the aerodynamic loads and performance parameters are not exceeded. In a steep turn, the aircraft must generate additional lift to counteract the increased load factor caused by banked flight. Going beyond the specified bank angle may lead to adverse flight characteristics and increased risk of stall, particularly in the context of these aircraft's design and performance specifications. Adhering to the 30-degree limit allows pilots to effectively manage the aircraft's performance while maintaining safety and compliance with operational guidelines.