Left front system out:
Navigator on walk-around bottle plugged into Bombardier's recharger
hose. Pilot uses Engineer's regulator hose from right front system.
Right front system out:
Bombardier on walk-around bottle plugged into Navigator's recharger
hose. Engineer same on Pilot's recharger hose. Copilot on top turret
regulator hose (hose too short in later models).
Left rear system out:
RO on one regulator from across aisle.
ARO on regulator right radio compartment.
AE on walk-around bottle on recharger hose, right radio compartment.
AG on waist regulator, right.
AG on tail regulator, right.
Right rear system out:
RO regular position.
ARO on bomb bay regulator.
AE on walk-around bottle plugged to ball turret recharger hose.
AG on waist regulator, left.
AG on tail regulator, left.