What is the secondary method of egress from an aircraft?

The secondary method of egress from an aircraft is indeed escape ropes. Escape ropes are essential safety tools that allow crew members and passengers to exit the aircraft in case the primary exit routes are blocked or inaccessible. These ropes are designed to be deployed from emergency exits and provide a means for individuals to safely descend from the aircraft to the ground or a safe area, especially in an emergency situation.

In contrast, escape slides are the primary means of evacuation from a commercial aircraft, typically deployed from the doors. The crew entrance door serves as the main point of access for crew members during normal operations, but it is not specifically designated for emergency egress in the same way that escape ropes are. A crash axe, while useful for breaking through obstructions during emergencies, does not serve as a means of egress. Thus, escape ropes stand out as the correct secondary method of egress, supporting safe evacuation when other options may not be available.