Boeing 737 NG Systems Review
Forward Overhead Panel  700/800/900
Display Selector
Engine Start Panel
ENGINE START Switches

Option - With automatic ignition

AUTO –

  • Ignition normally off

  • Both igniters are activated when engine start lever is in
    IDLE and:






  • Provides automatic ignition to selected igniters when:
  • An uncommanded rapid decrease in N2 occurs or,
  • N2 is between 57% and 50% or,
  • in flight - N2 is between idle and 5%.
  • Engine is running and,
  • flaps are not up below 18000 feet altitude or,
  • engine anti-ice is selected to ON.