4
TARGET AIRSPEED INPUT
(22-31-00)
TARGET AIRSPEEDREFFERENCE INPUT(22-31-00)
TARGET AIRSPEED VALID IN(22-31-00)
MACH WARNING TEST IN
(34-15-00)
5 ALT VALID 3 IN
VMO/MMO CURVE
SELECT INPUT
(FIG 6)
COARSE ALTITUDE INPUT
FINE ALTITUDE INPUT
0-5V AC PANEL LIGHTS ELECTRIC MACH AIRSPEED INDICATOR
Air Data System No. 1 Schematic (No. 2 Typical)Figure 4 (Sheet 2)
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A
737-300/400/500
MAINTENANCE MANUAL
ELECTRIC ALTIMETER
Air Data System No. 1 Schematic (No. 2 Typical)
Figure 4 (Sheet 3)
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A 737-300/400/500MAINTENANCE MANUAL
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A 737-300/400/500MAINTENANCE MANUAL
DATA WORD ARINC 429 DIGITAL SOURCE BUS DADC-1
L1 L2 L3 L4
DESTINATION FCC A ARINC 429 A/S RCVR EFIS SYM GEN NO. 1 TAT/ SAT/ TAS IND EIS A/T GPWC STALL WARN NO. 1 FMC IRU 1
203 ALTITUDE X X X X X X
204 BARO-CORRECTED ALT-1 X X X X
205 MACH X X X X X
206 COMPUTED AIRSPEED X X X X X X X
210 TRUE AIRSPEED X X X X X X
211 TOTAL AIR TEMPERATURE X X X X
212 ALTITUDE RATE X X X X
213 STATIC AIR TEMPERATURE X X X
217 STATIC AIR PRESSURE X X
220 BARO-CORRECTED ALT-2 1 2 X
242 TOTAL AIR PRESSURE X
DATA WORD ARINC 429 DIGITAL SOURCE BUS DADC-2
R1 R2 R3 R4
DESTINATION FCC B EFIS SYM GEN NO. 2 A/T STALL WARN NO. 2 FMC IRU 2
203 ALTITUDE 204 BARO-CORRECTED ALT-1 205 MACH 206 COMPUTED AIRSPEED X X X X X X X X X X X X X X X X X X
210 TRUE AIRSPEED 211 TOTAL AIR TEMPERATURE 212 ALTITUDE RATE 213 STATIC AIR TEMPERATURE X X X X X X X X X X X
217 STATIC AIR PRESSURE 242 TOTAL AIR PRESSURE 220 BARO-CORRECTED ALT-2 X X X X
ADC ARINC 429 DIGITAL DATA WORDS
Air Data System Digital Interface Schematic
Figure 5 (Sheet 2)
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E41331
A 737-300/400/500MAINTENANCE MANUAL
F12133
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A 737-300/400/500MAINTENANCE MANUAL
F12256
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