B-17 Pilots Manual.pdf

eair~ater'etorIgineIYbe5 toandJwerelow)Vide'etorggleJliesAphouretor,era-'etorIginese ofalcohol system does not relieve condition, it can beassumed the trouble is not caused by icing.3. To clear out engines quickly after a glideat low power through icing conditions.!. To obtain full power under icing conditions.5. As an alternate method of ice elimination ifuse of fuel turbo or carburetor air filter is prohibited.f. TRIM TAB CONTROLS.e. DEFROSTERCONTROL. -Hot airfor defrosting thepilot's and copilot'swindshields is controlledby a red buttonin the vee of thewindshield.(1) Complete aileron tab travel requires about3-3/4 turns of the knob located on the pilot's floorpaneL(2) Complete rudder tab travel requires abouts~ven turns of the wheel located on the floor in fronto~the control pedestal.(3) The elevator trim tab wheel on the left sideof the control pedestal requires about six turns forcomplete travel. It has a friction brake to preventcreeping.~. LOCKS.(1) AILERON LOCK. - The aileron is locked inneutral position by a pin which is manually insertedin a hole in the left control column, holding the centerspoke of that wheel in a padded slot. The pin is clippedto the pilot's control column when not in use.(2) RUDDER AND ELEVATOR LOCK. - Therudder and elevator locking lever operates by cablecontrol to place a pin in a socket on a segment ateach of the control quadrants. The locking lever,which is recess'ed into the floor aft of the enginecontrol pedestal, is locked in either the "Up" or"DOWN"position. The lever may be moved to the"Up" or "LOCKED" position, regardless of theattitude of the control surfaces. Under this condition,the control surfaces will automatically lockwhen the rudder is in the "NEUTRAL" position andthe elevator is in the "DOWN" position.(3) TAIL WHEEL' LOCK. - The tail wheel lockingleveroperates a single cable to retrace a springloadedlockingpin from a socket in the treadle. Thelocking lever which is recessed into the floor aft ofthe control pedestal, latches in the "Up" positiononly and may be moved into the "DOWN" positionregardless of the attitude of the tail wheel, whichwill lock when centered. To release the locking handle,press the knob on the end of it. A .red signallight on the pilot's instrument panel is "OFF" whenthe tail wheel is locked.h. AUTOMATIC FLIGHT CONTROL EQUIPMENT.The automatic flight control panel is located on thefront of the control pedestal. To engage A.F.C.E.:(1) Throw "ON" master and stabilizer switches.(2) CAREFULLY TRIM AIRPLANE FORSTRAIGHT AND LEVEL FLIGHT.(3) Turn "ON" tell-tale lights.(4) After master and stabilizer switches havebeen "ON" for 10 minutes, throw "ON" PDI and servoswitches.(5) Center PDI by turning plane and resumingstraight and level flight.Figure 25 - Lower Control Pedestal21