(6)  
Test automatic speed brake function of landing gear electrical module.

(a)  
Check that AUTO SPEED BRAKE, OUTBOARD ANTISKID, and INBOARD ANTISKID circuit breakers on panel P6 are closed.

(b)  
Pressurize hydraulic systems A and B. Ensure that automatic spoilers are in DN position. Depressurize hydraulic systems A and B. Refer to 29-11-0 and 29-12-0.

(c)  
Check that throttles are fully retarded and antiskid system is operational.

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(d)  
Check that wheel chocks are in place and release parking brake.

(e)  
Place SPEED BRAKE HANDLE switch in ARMED position. Check that speed brake ARMED light comes on and DO NOT ARM light is off.

(f)  
Connect antiskid/auto brake tester to receptacle on front of antiskid module.

(g)  
Set tester master switch to ON position.

(h)  
Set tester wheel speed LO, LI, RO, and RI switches to OFF position.

(I)  
Set tester wheel speed velocity switch to VEL position.

(j)  
Set tester wheel speed velocity potentiometer to a position greater than 62 knots.

NOTE:  Disregard all lights on the tester and all antiskid and auto brake lights in the control cabin for this test.

(k)  
Place tester wheel speed LI switch in ON position. Check that speed brake ARMED light goes off and DO NOT ARM light comes on.

(l)  
Place tester wheel speed LI switch in OFF position. Check that ARMED light comes on and DO NOT ARM light goes off.

(m)  
Place tester wheel speed RO switch in ON position. Check that ARMED light goes off and DO NOT ARM light comes on.

(n)  
Place tester wheel speed LO switch in ON position. Check that ARMED light comes on, DO NOT ARM light goes off, and speed brake handle moves to UP position.

(o)  
Place tester wheel speed LO and RO switches in OFF position. Check that ARMED light goes off and DO NOT ARM light comes on.

(p)  
Advance one throttle to a position more than 34 degrees above idle stop. Check that ARMED light comes on, DO NOT ARM light goes off, and speed brake handle moves to DN position. As speed brake handle completes travel, check that ARMED light goes off.

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(q)  
Retard throttle to idle stop and place speed brake handle in ARMED position. Check that ARMED light comes on.

(r)  
Depress and hold speed brake indicator test switch No. 2. Check that ARMED light goes off and DO NOT ARM light comes on.

(s)  
Release test switch. Check that ARMED light comes on and DONOT ARM light goes off.

(t)  
Open OUTBOARD ANTISKID circuit breaker. Check that ARMED light remains on and DO NOT ARM light remains off.

(u)  
Open INBOARD ANTISKID circuit breaker. Check that ARMED light  goes off and DO NOT ARM light comes on.

(v)  
Close OUTBOARD ANTISKID circuit breaker. Check that ARMED light comes on and DO NOT ARM light goes off.

(w)  
Close INBOARD ANTISKID circuit breaker. Check that ARMED light remains on and DO NOT ARM light remains off.

(x)  
Depress and hold speed brake indicator test switch No. 1. Check that ARMED light goes off and DO NOT ARM light comes on.

(y)  
Release test switch. Check that ARMED light comes on and DO NOT ARM light goes off.

(z)  
Depress and hold speed brake indicator test switch No. 3. Check that ARMED light goes off and DO NOT ARM light comes on. (aa) Release test switch. Check that ARMED light comes on and DO NOT ARM light goes off. (ab) Place tester wheel speed RI switch in ON position. Check that ARMED light goes off and DO NOT ARM light comes on.

(ac) Place tester wheel speed RI switch in OFF position. Check that ARMED light comes on and DO NOT ARM light goes off.
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(ad) Place tester wheel speed LO switch in ON position. Check that ARMED light goes off and DO NOT ARM light comes on.
(ae) Place tester wheel speed RO switch in ON position. Check that ARMED light comes on and DO NOT ARM light goes off, and that speed brake handle moves to UP position.
(af)  Place tester wheel speed LO and RO switch in OFF position. Check that ARMED light goes off and DO NOT ARM light comes on.
　
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