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 shows the rudders are at 31.5 +/- 1.5 degrees. 2) Measure and make a record of the travel of the trailing edge of the lower rudder.
 NOTE: The travel is the distance from the outboard side of____
 the trailing edge of the lower rudder to the nearest
 aft corner of the groove in the rudder index plate.
 3)  Measure and make a record of the distance between the
 trailing edges of the upper rudder and the lower rudder
 (this is the mismatch).
 NOTE: The mismatch is positive if the upper rudder is____
 outboard of the lower rudder. The mismatch is
 negative if the upper rudder is inboard of the lower
 rudder.
 4)  Calculate the travel of the upper rudder:
 LT = Lower rudder travel (in inches)
 UT = Upper rudder travel (in inches)
 MM = mismatch between the lower and upper rudder (in
 inches)
 UT = LT + (1.24 X MM)
 5)  Make sure the travel of the lower rudder and the upper
 rudder is 62.59-64.56 inches.
 6)  Make sure the rudder position indicators on the status page
 of EICAS show the rudders are fully right (the pointers are
 right of the third ten degree mark).

Release the rudder pedals.

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MAINTENANCE MANUAL

 (d)  Shake the rudder pedals to make sure they are in their center position. 1) Make sure the flight controls maintenance page of EICAS
 shows the rudders are 0.5 degrees left to 0.5 degrees right.
 S 735-089
 (3)  
Do the rudder travel test.

 (a)  
Do one of the two subsequent procedures to give high-speed rudder ratio changer position (extend). 1) Procedure 1 (For airplanes with two SRM's P/N 285U0015-108

 or later), see procedure 1 (AMM 27-21-00/524).
 WARNING:_______MAKE SURE THE FLAPS ARE RETRACTED. IF THE FLAPS ARE NOT RETRACTED, THEY CAN MOVE WHEN YOU PRESSURIZE THE PITOT-STATIC SYSTEM. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 2)  Procedure 2 (airplane with any combination of SRM part numbers installed), supply a pressure of 3.37-3.52 psig (363-371 knots) to the pitot-static system (AMM 34-11-00/201).
 (b)  
Use tape to attach a pointer to the left side of the trailing edge of the lower rudder. The end of the pointer must be clear of the rudder index tab by a maximum of 0.10 inch.

 (c)  
Push the captain's left rudder pedal fully forward and hold it.

 1)  Measure and make a record of the travel of the trailing edge of the lower rudder.
 NOTE: The travel is the distance from the end of the
____ pointer to the nearest aft corner of the groove in the rudder index plate.
 2)  Measure and make a record of the distance between the trailing edges of the upper rudder and the lower rudder (this is the mismatch).
 NOTE: The mismatch is positive if the upper rudder is
____ outboard of the lower rudder. The mismatch is negative if the upper rudder is inboard of the lower rudder.
 3) Calculate the travel of the upper rudder: LT = Lower rudder travel (in inches) UT = Upper rudder travel (in inches) MM = mismatch between the lower and upper rudder (in
 inches)
 UT = LT + (1.24 X MM)
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 4) Make sure the travel of the lower rudder and the upper rudder is 13.4-15.9 inches. 5) Release the rudder pedals.
 (d)  
Use tape to attach a pointer to the right side of the trailing edge of the lower rudder. The end of the pointer must be clear of the rudder index tab by a maximum of 0.10 inch.

 (e)  
Push the captain's right rudder pedal fully forward and hold it. 1) Measure and make a record of the travel of the trailing

 edge of the lower rudder.
 NOTE: The travel is the distance from the end of the
　
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