Boeing 737 NG Systems Review
Forward Overhead Panel  800/900
Display Selector
Bleed Air Panel 800/900
PACK  Light

Illuminated –

  • Indicates pack trip off or failure of both primary and standby
    pack controls.

  • During Master Caution recall, indicates failure of either
    primary or standby pack control. Extinguishes when Master
    Caution is reset.