Boeing 737 Review
Autopilot (A/P) Disengage Light

Illuminated (red) –
  • Flashes and tone sounds when the autopilot has disengaged.
  • Reset by pushing either disengage light or either A/P
    disengage switch
  • Steady for any of following conditions:







Illuminated (amber) –
  • Steady – disengage light test switch held in position 1.

Option - CWS warning activated
  • Flashing – A/P automatically reverts to CWS pitch or roll while
    in CMD. Resets by pushing either light or selecting another
    mode.
Option - Fail-Operational Autoland
  • Steady – with disengage light test switch not held in position 1,
    indicates downgrade in autoland capability.
Right Forward Panel 700/800/900
  • Stabilizer out of trim below 800 feet RA on dual channel
    approach.
  • ALT ACQ mode inhibited during A/P go–around if stabilizer
    is not trimmed for single A/P operation.
  • Disengage light test switch held in position 2
  • Automatic ground system tests fail.
Forward Panel Annunciator Lights