(c)
Engage AIL engage switch.
(d)
Repeat (b) using first officer's disengage button.
(e)
Engage AIL engage switch.
(f)
Open autopilot engage interlock circuit breaker. Observe that AIL engage switch disengages and autopilot disengage warning lights illuminate and flash.
(g)
Depress captain's warning light on left instrument panel. Observe that warning lights extinguish and the AIL engage switch cannot be engaged.
(h)
Close autopilot engage interlock circuit breaker.
(i)
Engage AIL engage switch.
(j)
Repeat (e) thru (h) for the roll channel ac, roll channel dc and derived rate ac (if installed) circuit breakers on the P6 load control center, compass No. 2, vertical gyro No. 1, and air data computer No. 1, 115-volt ac circuit breakers on the P18 load control center.
(k)
Engage AIL engage switch. Open compass No. 1 (P6 load control center) circuit breaker. Observe that AIL engage switch does not disengage. Close circuit breakers.
(l)
Place COMPASS select switch in BOTH ON 1 position. Observe that AIL engage switch disengages.
(m)
Engage AIL engage switch. Repeat steps (e) thru (h) for compass No. 1 circuit breaker.
(n)
Engage AIL engage switch. Open compass No. 2, circuit breaker. Observe that AIL engage switch does not disengage.
(o)
Close circuit breaker.
(p)
Place COMPASS select switch in NORMAL position. Observe that AIL engage switch disengages. Reset the warning lights.
(q)
thru (r) deleted.
(s)
Turn control wheel clockwise out of detent using minimum of 3 pounds-feet of torque. Observe that the AIL engage switch cannot be engaged.
(t)
Repeat (s) for counterclockwise control wheel movement.
(u)
Engage autopilot and move STANDBY POWER switch on forward overhead panel to OFF position. Observe that AIL and ELEV engage switches disengage. Return STANDBY POWER switch to AUTO position.
(v)
Engage AIL engage switch. Select FAIL on No. 1 air data computer and press PUSH TO TEST button for 10 seconds. Observe that AIL engage switch disengages. Release switch and return ADC to normal.
(w)
Position FLT CONTROL A switch to OFF and engage AIL engage switch.
(x)
Move control wheel and observe that ailerons respond to control wheel steering inputs.
(y)
Test flight control switches interlock. 1) Engage AIL engage switch and position FLT CONTROL B switch to OFF.
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Observe AIL engage switch disengages. 2) Return FLT CONTROL A and B switches to ON and engage AIL engage switch. 3) Position FLT CONTROL A switch to OFF. Observe AIL engage switch does not
disengage.
(2) Test Pitch Engage Interlocks
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(a)
Place ELEV engage switch in ENGAGED position.
NOTE: For the remainder of the Autopilot and Yaw Damper tests, the term engage autopilot will imply that both aileron and elevator engage switches must be engaged and the term disengage autopilot will imply that both aileron and elevator engage switches must be disengaged.
(b)
Depress autopilot disconnect button on captain's control wheel. Observe that the ELEV engage switch disengages.
(c)
Engage autopilot.
(d)
Disengage AIL engage switch. Observe that pitch engage switch does not disengage.
(e)
Open autopilot engage interlock circuit breaker (P6 load control center). Observe that ELEV engage switch disengages and warning lights illuminate and flash.
(f)
Extinguish warning lights. Observe that the ELEV engage switch cannot be engaged.
(g)
Close circuit breaker.
(h)
Engage ELEV engage switch and repeat (e) thru (g) for pitch ac, pitch dc, and derived rate ac circuit breakers on the P6 load control center, vertical gyro No. 1, and air data computer No. 1 115-volt ac circuit breakers on the P18 load control center. Observe that the ELEV engage switch disengages (within 3 seconds when opening the pitch dc circuit breaker).
(i)
Engage ELEV engage switch and open compass No. 2 circuit breaker. Observe that ELEV engage switch does not disengage. Close circuit breaker.
(j)
thru (n) Deleted.
