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In normal configuration, the Captain Primary Flight Display (PFD) and
 Navigation Display (ND) show the data computed by the ADIRU 1.
 The First Officer PFD and ND show the data computed by the ADIRU 2.
 The data from the ADIRU 3 can be displayed by action on the AIR DATA
 selector switch or on the ATT HDG selector switch located on the SWITCHING
 panel.
 These selector switches which define a priority order for the ADIRUs are
 also used by several other aircraft systems (Ref. Para. 4.F.).

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 2. Component Location__________________ (Ref. Fig. 001) The sensors, probes and ADMs are located on the aircraft as follows:
 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
 -------------------------------------------------------------------------------3FP1 SENSOR-ANGLE OF ATTACK, 1 127 824 34-11-19 3FP2 SENSOR-ANGLE OF ATTACK, 2 128 824 34-11-19 3FP3 SENSOR-ANGLE OF ATTACK, 3 127 824 34-11-19 11FP1 SENSOR-TAT, 1 121 34-11-18 11FP2 SENSOR-TAT, 2 122 34-11-18 19FP1 ADM-L TOTAL PRESSURE NONE 125 812 34-11-17 19FP2 ADM-R TOTAL PRESSURE 126 822 34-11-17 19FP3 ADM-STBY TOTAL PRESSURE 125 812 34-11-17 19FP4 ADM-R STATIC PRESSURE 128 824 34-11-17 19FP5 ADM-L STATIC PRESSURE 127 824 34-11-17 19FP6 ADM-R STATIC PRESSURE 128 824 34-11-17 19FP7 ADM-L STATIC PRESSURE 127 824 34-11-17 19FP8 ADM-STBY STATIC PRESSURE 121 811 34-11-17 7DA1 PROBE-L STATIC, 1 127 824 34-11-16 7DA2 PROBE-L STATIC, 2 127 824 34-11-16 7DA3 PROBE-L STATIC, 3 121 811 34-11-16 8DA1 PROBE-R STATIC, 1 128 824 34-11-16 8DA2 PROBE-R STATIC, 2 128 824 34-11-16 8DA3 PROBE-R STATIC, 3 122 811 34-11-16 9DA1 PROBE-PITOT, 1 125 812 34-11-15 9DA2 PROBE-PITOT, 2 126 822 34-11-15 9DA3 PROBE-PITOT, 3 125 812 34-11-15
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 ADIRS - Probe and Sensor Location
 Figure 001

R 1EFF : 051-099, 106-149, 204-299, 301-399, 1 34-11-00Page 3 1401-499, 1Config-3 Aug 01/05 1 1 1CES 1 The different ADIRS switching devices are located on the aircraft as

 follows:
 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
 -------------------------------------------------------------------------------12FP RELAY-ADIRS ON BAT/GROUND WARN 103VU 126 34-11-00 13FP SEL SW-ATT HDG 8VU 210 34-11-00 14FP RELAY-ADIRS 3 PWR SHEDDING 103VU 126 34-11-00 15FP SEL SW-AIR DATA 8VU 210 34-11-00 16FP RELAY-ADIRS 3 28VDC CONTROL 103VU 126 34-11-00 17FP RELAY-ADIRS 2 PWR SHEDDING 103VU 126 34-11-00 21FP1 RELAY-AOA1 TEST 103VU 126 34-11-00 21FP2 RELAY-AOA2 TEST 103VU 126 34-11-00 21FP3 RELAY-AOA3 TEST 103VU 126 34-11-00 22FP SW-L/G DOWN VMO/MMO SELECTION 188VU 128 34-11-00 23FP RELAY-ADIRS LGCIU GND POS 103VU 126 34-11-00
 ------------------------------------------------------------------------------
NOTE : The function of the switch (22FP) is described in 34-12-00.
____
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 3. Power Supply____________
 A. General (Ref. Fig. 002) The ADIRU is normally supplied with 115VAC, 400 Hz power for the ADR and IR functions. However its AOA resolver converter module is supplied with 26VAC, 400 Hz. The 28VDC back-up generation is provided by batteries and is automatically used when the main power exceeds its normal limits. At the beginning of each power cycle the ADIRU switches from the main to the back-up power to test the electrical generation. The table below gives the power consumption of each unit of the ADIRS:
 ------------------------------------------------------------------| EQUIPMENT | 28VDC | 115VAC | 26VAC | | |-------------------|-------------------| | | | Typical | Maximum | Typical | Maximum | | ------------------------------------------------------------------| ADIRU (1) | 67 W | 84 W | 79 VA | 98 VA | 1 VA | |----------------|---------|---------|---------|---------|-------| | AOA Sensor | | | 250 VA | 320 VA |3.5 VA | |----------------|---------|---------|---------|---------|-------| | PITOT Probe | | | 281 VA | 360 VA | | |----------------|---------|---------|---------|---------|-------| | TAT Sensor | | | 200 VA | 350 VA | | |----------------|---------|---------|---------|---------|-------| | STATIC Probe | | 2X75 W | | | | |----------------|---------|---------|---------|---------|-------| | PHC | | 14 W | | | | ------------------------------------------------------------------
(1) ADIRU power consumption includes the supply of three ADMs. With ON BAT annunciator, add 5 W. With IR FAULT annunciator at I = 250 mA, add 10.5 W. Other annunciators are open/ground discretes and so they are energized by a power which is different from the ADIRU power. When the ADIRU is in the OFF mode, all the circuitry in the ADIRU is de-energized except for any logic associated with the power off function. Current does not exceed 10 mA DC. Each ADIRU supplies the power for the ADM of its side (CAPT, F/O, STBY). The ADIRU also supplies the CDU with a 28VDC signal. The consumption of the CDU is 6 W (typical) and 10 W (maximum).
　
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