(e)
Make sure the speed brake lever is in the ARMED position and the SPEED BRAKE ARMED light is on.
(f) Do a test of the SPEED BRAKE ARMED and DO NOT ARM lights with the antiskid control unit (Fig. 501): 1) On the antiskid control unit, turn the WHEEL SELECT knob to the LO position and push the VALVE and SKID buttons. a) Make sure the SPEED BRAKE DO NOT ARM light comes on.
2) Release the VALVE and SKID buttons. a) Make sure the SPEED BRAKE ARMED light comes on. b) Make sure the spoilers do not extend.
WHEEL SELECT KNOB
ANTISKID CONTROL UNIT
A
Automatic Speed Brake Test Equipment Figure 501
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A
737-300/400/500MAINTENANCE MANUAL
3) Do the test again with the WHEEL SELECT knob in the LI, RI, and RO positions.
(g)
With the speed brake lever in the ARMED position and the SPEED BRAKE ARMED light on, turn the WHEEL SELECT knob to the LO position.
(h)
Push and hold the LW (lock wheel) and SKID buttons.
NOTE: The SPEED BRAKE DO NOT ARM light will come on
____ momentarily if you do not push the buttons at the same time.
1) Make sure the speed brake lever moves to the UP position. 2) Make sure the flight spoilers No. 2, 3, 6, and 7 move to the full up position. 3) Make sure the ground spoilers No. 4 and 5 move to the full up position. 4) Make sure the ground spoiler No. 0, 1, 8 and 9 move to the full up position. 5) Make sure the SPEED BRAKE ARMED light is on.
(i)
Release the LW and SKID buttons.
1) The SPEED BRAKE DO NOT ARM light will come on.
(j)
Move the speed brake lever to the DOWN position. 1) Make sure the SPEED BRAKE DO NOT ARM light is off.
(k)
AIRPLANES WITH SPEED BRAKE TEST SWITCHES; Push the SPEED BRAKE TEST switch 3 to retract the speed brake lever actuator.
(l)
AIRPLANES WITHOUT SPEED BRAKE TEST SWITCHES; Move one of the thrust levers forward to retract the speed brake lever actuator. Move the thrust lever back to the idle position.
(m)
Move the speed brake control lever to the ARMED position. 1) Make sure the SPEED BRAKE ARMED light comes on. 2) Place the speed brake control lever in the DOWN detent.
S 725-017
(8) Do a test of the speed brake actuator during a refused take-off (RTO Test):
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A 737-300/400/500MAINTENANCE MANUAL
WARNING:_______ MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE
THRUST REVERSERS BEFORE YOU MOVE THE REVERSE THRUST LEVER.
THE THURST REVERSERS CAN MOVE QUICKLY WHEN YOU MOVE THE
REVERSE THRUST LEVER. THIS CAN CAUSE INJURY TO PERSONS
AND DAMAMGE TO EQUIPMENT.
(a)
Move the No. 1 reverse thrust lever to the REVERSE position. 1) Make sure the SPEED BRAKE ARMED light is on.
(b)
Turn the WHEEL SELECT switch to the LO position.
(c)
Push and hold the LW (lock wheel) and SKID buttons.
NOTE: The SPEED BRAKE DO NOT ARM light will come on
____ momentarily if you do not push the buttons at the same time.
1) Make sure the speed brake lever moves to the UP position. 2) Make sure all ground and flight spoilers move to the full up position. 3) Make sure the SPEED BRAKE ARMED light is on.
(d)
Release the LW and SKID buttons. 1) Make sure the SPEED BRAKE DO NOT ARM light comes on. 2) Make sure the SPEED BRAKE ARMED light is off.
(e)
Move the No. 1 reverse thrust lever to the idle position.
(f)
Move the No. 1 thrust lever forward. 1) Make sure the speed brake lever moves to the DOWN position. 2) Make sure the all of the spoilers move the retracted
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