B737 Takeoff Config and Cabin Altitude Lights

Takeoff Configuration Warning Light

  • Illuminated (red) –
    • activates on the ground as the throttles are advanced if the airplane is not
      configured correctly for takeoff
    • activation is simultaneous with aural warning intermittent horn for
      TAKEOFF CONFIGURATION alert.

Cabin Altitude Warning Light

  • Illuminated (red) –
    • illuminates when cabin altitude exceeds 10,000 feet activation is simultaneous with aural warning intermittent horn for CABIN ALTITUDE alert.
    • extinguishes when cabin altitude descends below 10,000 feet.