Editing Flameout (section)

==Engine control==
Early jet engines were prone to flameout following disturbances of inlet airflow, or sudden or inappropriate [[thrust lever]] movements, which resulted in incorrect [[air-fuel ratio]]s in the combustion chamber. Modern engines are much more robust in this respect, and are often [[FADEC|digitally controlled]], which allows for significantly more effective control of all engine parameters to prevent flameouts and even initiate an automatic restart if a flameout occurs.

Flameouts occur most frequently at intermediate or low power settings such as in cruise and descent. To prevent a flameout when atmospheric or operational conditions are conducive to it, engine control systems usually provide a continuous ignition function. Ignitors are normally used only at engine start, until the flame in the combustion chamber becomes self-sustaining. With continuous ignition, instead, the ignitors are continually sparked every second or less, so that if a flameout occurs, combustion can immediately be restored.<ref>{{cite web |url=https://www.faa.gov/aircraft/air_cert/design_approvals/engine_prop/media/engine_malf_famil.doc |format=doc |title=Airplane Turbofan Engine Operation and Malfunctions, Basic Familiarization for Flight Crews |publisher=[[FAA]] |access-date=2012-03-25 |url-status=live |archive-url=https://web.archive.org/web/20130904032524/http://www.faa.gov/aircraft/air_cert/design_approvals/engine_prop/media/engine_malf_famil.doc |archive-date=4 September 2013}}</ref>