(c)
Check that compass system indicates a heading of zero degrees.
(d)
Tune No. 1 VOR/ILS system to 108.0 MHz. Check that VOR RMI narrow pointers indicate a magnetic bearing of 180 +3 degrees and that ADI and HSI glide slope flags and pointers are out of view.
(e)
Turn captain's course selector knob until HSI course deviation bar is centered. Check that captain's HSI course counter indicates 000 +2 degrees and that course deviation bar is parallel to VOR RMI narrow pointers.
(f)
Rotate captain's course selector until course deviation bar is over second left dot. Check that course counter indicates 350 +4 degrees.
(g)
Rotate captain's course selector until course deviation bar is over second right dot. Check that course counter indicates 010 +4 degrees.
(h)
Rotate captain's course selector until course counter indicates 000 degrees.
(i)
Set signal generator to transmit 315-degree radial (135-degree bearing). Check that VOR RMI narrow pointers indicate a magnetic bearing of 135 +3 degrees and that captain's HSI course deviation bar is deflected full-scale right and FROM flag comes into view.
(j)
Repeat step (i) for left deflection using 45-degree test radial (225-degree bearing). Check that VOR RMI narrow pointers indicate 225 +3 degrees and that captain's HSI course deviation bar deflects full scale left.
(k)
Tune No. 1 VOR/ILS system to 108.05 MHz. Check that captain's HSI VOR/LOC flag appears.
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BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(l)
Tune No. 1 VOR/ILS system to 108.00 MHz. Check that captain's HSI VOR/LOC flag disappears.
(m) Repeat steps (a) thru (l) using No. 2 VOR/GS system. Observe VOR RMI wide pointers and first officer's ADI and HSI.
(6)
Test LOC Function
(a)
Set signal generator for maximum on course localizer output at 108.10 MHz.
(b)
Tune No. 1 VOR/GS system to 108.1 MHz. Check that VOR RMI narrow pointers stow at 3 o'clock and that ADI and HSI glide slope flags and scale are in view.
(c)
Rotate captain's course selector to position HSI course arrow in line with indicator lubber line. Check that captain's HSI course deviation bar and ADI localizer pointer or runway symbol are centered and that HSI VOR/LOC flag and ADI localizer shutter or RUNWAY flag are out of view.
(d)
Set signal generator for fly-left indication. Check that HSI course deviation bar and ADI localizer pointer or runway symbol deflect left.
(e)
Repeat above step for fly-right indication.
(f)
Repeat steps (b) thru (e) using No. 2 VOR/GS system. Observe VOR RMI wide pointers and first officer's ADI and HSI.
(7)
Test GS Function
(a)
Place signal generator approximately 50 feet from glide slope antenna.
(b)
Tune No. 1 VOR/GS system to 108.1 MHz and signal generator to 108.1-334.7 MHz. Check that captain's ADI and HSI GS flags and pointers appear.
(c)
Set GLIDE SLOPE control on generator to ON. Check that captain's ADI and HSI GS flags disappear.
(d)
Place output selector control on signal generator to GS DOWN position. Check that glide slope pointers in captain's ADI and HSI deflect downward.
(e)
Repeat above step for GS UP position. Check that glide slope pointers deflect upward.
(f)
Turn off glide slope carrier. Check that GS flags in captain's ADI and HSI come into view.
(g)
Repeat steps (b) thru (f) using No. 2 VOR/GS system and first officer's ADI and HSI.
(h)
Remove airplane electrical power if no longer required.
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VOR ANTENNA - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Bonding Meter (Ref 20-22-01)
2. Remove Antenna
A. Remove 12 leading edge fin tip mounting screws (Fig. 401).
B. Remove leading edge fin tip.
C. Remove two rf connectors from antenna.
D. Remove 40 antenna mounting screws along base of antenna. Do not remove eight screws securing trailing edge fin tip to antenna.
E. Remove antenna and trailing edge fin tip.
F. Bag and stow rf connectors and mounting screws.
3. Install Antenna
A. Clean faying surfaces of antenna and airplane structure to provide an electrical bond with a maximum resistance of 0.01 ohm.
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