PB4Y-1 Liberator Procedures

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PRE_FLIGHT CONTROL CHECK
Before flight verify you have full control
authority. Perform while sitting on the
ground with the engine off.
Elevator Up 19.6
Elevator Down 16.1
Aileron Up 26.0
Aileron Down 19.0
Rudder 22.4

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TAKEOFF
Cowl Flaps OPEN
Elevator Trim Set to 09.6 deg
Rudder Trim Set to 00.0 deg
Prop set to 2,700 rpm
Flaps AS NEEDED
Throttle (as control permits) 48 in. Hg.
Brakes RELEASE
Rotate (max Weight) 135 mph (IAS)
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NORMAL CLIMB
Cowl Flaps OPEN
Max CHT Temp 264 deg C
Prop set to 2,700 rpm
Throttle 48 in. Hg.
Airspeed 152 mph (IAS)

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CRUISE (BEST RANGE)
Throttle 28.8 in. Hg.
Prop set to 1,620 rpm

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COMBAT
Prop Set to WEP 2,700 rpm
Throttle set to WEP 48 in. Hg.
Vy - Best Climb Speed 152 mph (IAS)
Vno - Maneuvering Speed 135 mph (IAS)
*** - Corner Speed 165 mph (IAS)
Vne - Max Dive Speed 275 mph
Max g 2.0 g
Structural Failure 3.0 g

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LANDING
Prop set to 2,700 rpm
Airspeed - Pattern 113 mph (IAS)
Flaps DOWN
Gear DOWN
Airspeed - Over the Fence 81 mph (IAS)