Autobrake and Antiskid Controls
AUTO BRAKE DISARM Light

Illuminated –

  • SPEED BRAKE lever moved to down detent during
    RTO or landing.
  • Manual brakes applied during RTO or landing.
  • Thrust lever(s) advanced during RTO or landing.



  • Landing made with RTO selected.
  • RTO mode selected on ground



  • A malfunction exists in automatic braking system.

Extinguished –

  • AUTO BRAKE select switch is set to OFF
  • Autobrakes are armed.
  • Except during the first 3 seconds after touchdown
    for landing.
  • Illuminates for one to two seconds then
    extinguishes. (Self test)