Then they will drop by your feet. There should be a placard in the bunk telling you which way to lay in the bunk (Head a/c nose and feet a/c tail)
The oxygen masks in the bunks will drop automatically in the event of a decompression.
Each mask oxygen valve is held closed by a pin inserted into the valve. Pulling on the mask withdraws the pin, causing the mask oxygen valve to open and oxygen to flow to that mask.
The Oxygen masks may be manually released by inserting a hair pin or thin rod into the hole of the oxygen compartment cover.
If a cabin decompression occurs during cruise:
• a decompression horn sounds continuously in the crew rest area
• in the door 5 upper crew rest common area, the green oxygen indicator light, located above the stair, will illuminate.
The oxygen masks located above the bunks and seats will automatically deploy when the cabin altitude is above 13,500 feet. Oxygen flow is available when the mask or yellow streamer attached to the mask is pulled.
Crew rest occupants should immediately don one of the PSU or bunk service unit oxygen masks, move to an unoccupied position, and fasten the seat/bunk lap belt.
WARNING: It is acceptable to reach over a seat/bunk occupant to obtain an open/unused oxygen mask to prevent oxygen deprivation/lightheadedness
when moving to an unoccupied position.