Landing Gear Transfer Unit
Hydraulic system B pressure is available for raising the landing gear through the
landing gear transfer unit. Hydraulic system B supplies the volume of hydraulic
fluid required to raise the landing gear at the normal rate when all of the following
conditions exist:
• airborne
• No. 1 engine RPM drops below a limit value
• LANDING GEAR lever is positioned UP
• either main landing gear is not up and locked.