3 intact cylinders (2 shot out), pressure 200 pounds, pilot and navigator on system.

5 x 3 x 200/400 x 1/2 = 3 plus hours.

For 3 men:

5 x 3 x 200/400 x 1/3 = 2 plus hours.

FRONT RIGHT SYSTEM: 4 cylinders - full charge to 450 pounds = 20 man hours.

Example:

4 cylinders, pressure 160 pounds, bombardier, co-pilot, and engineer on system.

5 x 4 x l60/400 x 1/3 = 2½ plus hours

LEFT REAR SYSTEM: 6 cylinders - full charge to 450 pounds 30 man hours.

Example: