(2)  
Install vertical gyros 1 and 2 on tilt tables and level.

(3)  
Connect external electrical power and energize P6 and P18 circuit breaker panels.

(4)  
Check that following CB's are closed: NO. 1 and NO. 2 INSTRUMENTS, NO. 1 and NO. 2 NAVIGATION, and FLT DIR-1 and 2.

(5)  
Turn on signal generators, allow to warm up and calibrate as indicated in signal generator instruction manual.

D.  Test Navigation Warning System
(1)  Test Power, Dim and Self-Test
(a)  
Place VERTICAL GYRO, COMPASS, and VHF NAV transfer switches on overhead panel in NORMAL position.

(b)  
Synchronize both compass systems.

(c)  
Check that captain's and first officer's instrument warning panel lights are out.

(d)  
Open comparator power circuit breaker. Check that MON PWR lights on instrument warning panels come on.

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(e)  
Push either captain's or first officer's instrument warning panel face. Check that warning lights dim.

(f)  
Close comparator power circuit breaker. Check that MON PWR lights go out.

(g)  
Press comparator test button on captain's instrument panel. Check that all lights except MON PWR lights on instrument warning panels come on.

(h)  
While holding test switch, press captain's or first officer's instrument warning panel face. Check that warning lights dim.

(2)  
Test Compass Warning

(a)  
Place flight director mode selector in VOR/LOC position and set radio-omega switch to RADIO. Slew captain's HSI compass card in an increasing direction to a heading 6

.2 degrees higher than first officer's. Check that HDG lights come on in less than 10 seconds.

(b)  
Repeat step (a) slewing first officer's HSI heading card.

(c)  
Resynchronize both compass systems.

(d)  
Tilt vertical gyros 20 degrees in right roll. Repeat steps (a) thru (c) using 10 .2.5 degrees offsets in captain's and first officer's HSI headings.

(e)  
Repeat step (d) for 20 degrees left roll.

(f)  
Level vertical gyros. Place flight director mode selector to MAN GS and repeat steps

(a) thru (c). Check that difference in captain's and first officer's HSI headings is 4.5 .1 degrees.

(g)  
Place flight director mode selector in VOR/LOC position.

(3)  
Test Pitch Warning

(a)
Tilt No. 1 vertical gyro 2 degrees nose up and No. 2 vertical gyro 2.0 .1.6 degrees nose down. Check that PITCH lights on instrument warning panels come on.

(b)  
Tilt No. 1 vertical gyro 10 degrees nose up. Tilt No. 2 vertical gyro 6.0 士1.6 degrees nose up. Check that PITCH lights come on.

(c)  
Tilt No. 2 vertical gyro 14士1.6 degrees nose up. Check that PITCH lights come on.

(d)  
Repeat steps (b) and (c) for nose down.

(e)  
Place flight director mode selector in MAN GS position. Keep No. 2 vertical gyro level and tilt No. 1 vertical gyro 3士1 degrees nose up. Check that PITCH lights come on.

(f)  
Repeat step (e) for nose down.

(g)  
Repeat steps (e) and (f) with No. 1 vertical gyro level and tilting No. 2 vertical gyro.

(h)  
Place flight director mode selector in VOR/LOC position.

(4)  
Test Roll Warning

(a)  
Tilt No. 1 vertical gyro 2 degrees in right roll and No. 2 vertical gyro in 2.0士1.6 degrees right roll. Check that ROLL lights on instrument warning panels come on.

(b)  
Tilt No. 1 vertical gyro 20 degrees right roll. Tilt No. 2 vertical gyro 16士1.6 degrees right roll. Check that ROLL lights come on.

(c)  
Tilt No. 2 vertical gyro 24士1.6 degrees right roll. Check that ROLL lights come on.

(d)  
Repeat steps (b) and (c) for left roll.

(e)  
Place flight director mode selector in MAN GS position. Keep No. 2 vertical gyro level and tilt No. 1 vertical gyro 3士1 degrees right roll. Check that ROLL lights come on. 

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(f)  
Repeat step (e) for left roll.

(g)  
Repeat step (e) and (f) keeping No. 1 vertical gyro level and tilting No. 2 vertical gyro.

(h)  
Place flight director mode selector on VOR/LOC position.
　
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