Definition
An ignition system used in turbine engines that provides an uninterrupted electrical spark at the igniters whenever it is selected on, rather than only during engine start. It is used in flight conditions where there is an elevated risk of flameout — such as flight in heavy precipitation, icing, or turbulence — to ensure that combustion is immediately re-established if the flame is momentarily disrupted.
Plain English
A system that keeps the igniters firing continuously while the engine is running, so that if the flame in the combustion chamber goes out, it will relight straight away.
Context Anchor
Seen in turbine engine operating procedures, especially for takeoff, landing, icing conditions, heavy rain, and turbulence.
Derivation
‘Continuous’ comes from Latin continuus, meaning ‘uninterrupted’ or ‘unbroken.’ The name reflects how the system differs from a normal start ignition — it keeps sparking the whole time it is selected, rather than just briefly during engine light-up.
Why Pilots Care
Prevents sudden engine power loss that could compromise safety during critical phases of flight.
Grounding Statement
Picture flying through heavy rain: continuous ignition keeps sparks available in the engine so the flame is not left on its own if the airflow and fuel burning are disturbed.
Intuition Check
Continuous does not mean the system is always used for the entire life of the engine. Here it means the igniters can keep firing continuously during selected operating conditions when extra flame stability is needed.
Example Sentence 1
Before entering the thunderstorm area, the crew selected continuous ignition to guard against a flameout in heavy rain.
Example Sentence 2
During the engine start sequence the continuous ignition system automatically activated to ensure reliable light-off.