What should be done if cowl and continuous ignition are required simultaneously?

When both cowl anti-ice and continuous ignition systems are required simultaneously, activating the cowl anti-ice before engaging continuous ignition is essential. This procedure ensures the proper formulation of the aircraft's systems, as the cowl anti-ice might need to operate effectively to prevent ice accumulation during flight, while continuous ignition helps to maintain combustion stability under certain conditions.

By prioritizing the activation of the cowl anti-ice system, it guarantees that the aircraft's engines are protected from ice build-up on the cowl, which could impair performance and safety. Once this system is operating, continuous ignition can be engaged to ensure reliable engine performance, especially in icy conditions. This sequential approach maximizes the effectiveness of both systems, maintaining safe operational parameters for the aircraft.