(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/ILS system and first officer's ADI and HSI.

(h)  
Remove airplane electrical power if no longer required.

5C8 
Jun 20/85  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  34-31-01 Page 505 

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.
B.  Apply a protective coating of corrosion preventive compound LPS-3 to mating surfaces of antenna and airplane structure per 51-21-91, Cleaning/Painting.
C.  Install trailing edge fin tip to antenna, if not already installed. Do not install leading edge fin tip.
D.  Place antenna and trailing edge fin tip in position on top of vertical fin.
E.  Connect rf cables to antenna.
F.  Install leading edge fin tip to antenna assembly using 12 mounting screws.
G.  Install base mounting screws and tighten.
H.  Check electrical bond between antenna and airplane structure per 20-22-01. Resistance should not exceed 0.01 ohm.
I.  Test VOR antenna for satisfactory operation (Ref 34-31-0 A/T).
501 
Feb 20/85  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  34-31-11 Page 401 

H24863
 VOR Antenna Installation  500 
34-31-11Page 402   Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Feb 15/69 

GLIDE SLOPE ANTENNA - REMOVAL/INSTALLATION
1.  Equipment and Materials
A.  Bonding Meter (Ref 20-22-01)
2.  Remove Glide Slope Antenna
A.  Open radome.
(1)  
Remove screws from edge of radome.

(2)  
Insert fingers at bottom aft end of radome and rotate bottom edge forward and up.

CAUTION: DO NOT PRY RADOME OPEN.

(3)  
Install support when radome is open.

NOTE: 1)  Before removing glide slope antenna, inspect the glide slope antenna director bar. It is a 13-inch continuous strip of aluminum foil tape, positioned horizontally across the centerline on the inside surface of the nose radome, approximately 22 inches from the radome upper aft edge.
2)  If director bar is undamaged and still in the 13-inch continuous configuration, proceed with glide slope antenna removal. Replace the tape if is has been cut, damaged or losing adhesion per instruction in 53-52-0.
B.  Remove screws holding glide slope antenna to support plate (Fig. 401).
C.  Pull antenna assembly forward far enough to gain access to antenna connectors.
D.  Disconnect antenna connectors and remove antenna assembly.
3.  Install Glide Slope Antenna
A.  Clean faying surfaces of antenna and airplane structure to provide an electrical bond with a maximum resistance of 0.01 ohm.
B.  Hold antenna adjacent to mounting plate and connect antenna cables.
C.  Set antenna in place on mounting plate and install mounting screws (Fig. 401).
D.  Check antenna cables are not kinked.
E.  Check electrical bond between antenna and airplane structure per 20-22-01. Resistance should not exceed 0.01 ohm.
F.  Close radome and reinsert mounting screws.
G.  Test glide slope antenna for satisfactory operation (Ref 34-31-0 A/T).
501 
Oct 20/87  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  34-31-21 Page 401 

Glide Slope Antenna Installation  500 
34-31-21  Figure 401  Oct 20/90 
　
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