PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

During a climb with IAS mode active, what is the minimum rate of climb?

1. It will never be less than 50 fpm

2. It can vary greatly depending on load

3. It is always 100 fpm

4. It is only relevant in DES mode

The correct answer is: It will never be less than 50 fpm

The minimum rate of climb with indicated airspeed (IAS) mode active is 50 feet per minute (fpm). This is an established safety parameter that ensures the aircraft maintains a minimum performance threshold during a climb. It is crucial for pilot awareness and aircraft performance, as maintaining a certain climb rate ensures that the aircraft remains within safe operating conditions while ascending. Understanding that it's never less than 50 fpm highlights the design aspect of the aircraft's climb performance, ensuring that even under less-than-ideal conditions, such as heavy loads or reduced thrust, the aircraft will still achieve a minimal rate of climb. This enhances safety margins and provides pilots with confidence in the aircraft’s ability to climb adequately. The other options refer to variables that do not establish a minimum requirement for climb rate during IAS mode. The argument about it varying greatly depending on load pertains to performance characteristics, but does not define a minimum. Specifying a consistent rate like always 100 fpm is misleading since performance can change under varying conditions. Finally, stating it is only relevant in DES mode misconstrues the essential functionality of IAS during a climb, which remains significant in various flight phases. Understanding the minimum climb rate provides essential insight into operational limits and safety protocols in aviation.