737-700 MAINTENANCE TRAINING MANUAL BITE HANDBOOK 机务培训手册 自测手册(49)

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HDG SEL and Flight Directors
Turn on the F/Ds and push the HDG SEL mode selector switch. The FMA annunciator shows HDG SEL and FD. The F/D integrated cue does not show because there is no valid pitch mode. Push ALT HLD to activate a pitch mode. The FMA now also shows ALT HOLD and the F/D cue shows on the AI. Turn the selected heading to a heading different from the airplane heading. The F/D command will turn to command a turn to the selected heading.
HDG SEL and Autopilot
Engage A/P A in CMD and push the HDG SEL mode selector switch. These annunciations show on the FMA:
- HDG SEL 
- CMD 
- CWS P. 

Turn the selected heading to a heading different from the airplane heading. The control wheel will turn to turn to the selected heading.
January 1, 2004
22-11
- 62 -
SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
A22-11-00-102.fm
FLIGHT DIRECTOR
ALT HOLD HDG SEL FD
HEADING ALTITUDE
1. TURN ON F/D
SWITCH

MA
1030
2. PUSH HDG SEL F/D
SEL
MODE SELECTOR
30 OFF
10
ALT HLD HDG SEL
SWITCH
3. PUSH ALT HLD
MODE SELECTOR
SWITCH

ALT HOLD HDG SEL FD
HEADING
4. TURN SELECTED HEADING
10
30
TO A HEADING DIFFERENT
FROM THE AIRPLANE HEADING.

30 HDG SEL
10
AUTOPILOT
A/P ENGAGE
HEADING CMD A CMD B
1. ENGAGE A/P A IN CMD
10 CWS A CWS B
30
HDG SEL
CMD
2. PUSH HDG SEL
CWS P
MODE SELECTOR
30 HDG SEL
10
DISENGAGE
SWITCH CONTROL WHEEL TURNS TO TURN AIRPLANE TO
HEADING
3. TURN SELECTED HEADING
10
SELECTED HEADING
TO A HEADING DIFFERENT 30
FROM THE AIRPLANE HEADING.

3010
DFCS - GROUND OPERATIONS -ROLL MODE - LNAV AND HDG SEL
January 1, 2004
22-11
- 63 -
SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
A22-11-00-108.fm
DFCS - GROUND OPERATIONS - ROLL MODE -VOR/LOC
VOR LOC
Unless the VOR station is very close to the airport, you will not receive a valid VOR signal. However, you may be able to receive the localizer signal.
Flight Director
Turn on the F/Ds and push the VOR LOC mode selector switch. Tune the navigation control panel to the airport ILS frequency. The FMA shows VOR LOC and FD in green letters. This occurs if the ILS receiver receives a valid LOC signal. The F/D command does not show because there is no valid pitch mode. Push ALT HLD to activate a valid pitch mode. The FMA now also shows ALT HOLD and the F/D command shows on the AI. The F/D command may turn to command a turn to the localizer centerline.
Autopilot
　
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