O2 Mask Panel

Question 1

02 Mask Panel

O2 Flow Indicator

RESET/TEST Switch

O2 Mask Release Lever

Answer 1

Flow Indicator -

• yellow cross when O2 is flowing

Reset / Test Switch -

• Push -
  
  • if mask is stowed, activates O2 flow momentarily to test regulator
  • if mask is NOT stowed and stowage box doors are closed -
    
    • retracts OXY ON flag
    • shuts off oxygen

Release Lever -

• sqeeze and pull -
  
  • ​releases mask from stowage box
  • releases OXY ON flag when stowage box doors open
  • initiates oxygen flow
  • inflates mask harness (when inflation lever is squeezed)
  • flow indicator show yellow cross as harness inflates
  • on some variations - it enables the mask mic when the LEFT o2 mask panel door is opened and disables the boom mic