R Figure 010A
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1 1 Config-3 Aug 01/05
1 1
1CES 1
ADIRS BITE - Air Data Reference System - Class 1 Internal Faults 2/4
Figure 011
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ADIRS BITE - Air Data Reference System - Class 1 Internal Faults 3/4
Figure 012
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ADIRS BITE - Air Data Reference System - Class 1 Internal Faults 4/4
Figure 013
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ADIRS BITE - Air Data Reference System - Class 2 Faults
Figure 014
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ADIRS BITE - Air Data Reference System - Class 1 External Faults
Figure 015
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ADIRS BITE - Air Data Reference System - Class 3 Faults
Figure 016
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341117 ADMi (19FPi) (i = 1, 2 or 3)
341117 ADMi (19FPi)/ADMj(19FPj) (i,j) = (1,5), (2,7) or (3,8)
341234 WRG: SDI PIN PROG/ADIRUi (1FPi)
341234 WRG: SDI PIN PROG/ADMi (19FPi)/ADIRUi (1FPi)
341234 WRG: SDI PIN PROG/ADMj (19FPj)/ADIRUi (1FPi) (i,j) =
(1,5), (2,7) or (3,8).
341234 WRG: SDI PIN PROG/ADMi/j ADIRUi (1FPi) (19FPi/j) (i,j) =
(1,5), (2,7) or (3,8).
(b) Cross-channel comparison tests A cross-channel comparison of pressures, angle-of-attack, and temperature parameters is performed to identify drifted air data input sensors. These tests are done for maintenance purpose only and they have no operational effects (no fault warning, output parameters are always valid, class 3 failures). To run these tests, each ADR portion receives one ADR output bus of the other side computers (Ref. Fig. 001) As the air data sensors are installed per design in different zones and measure different values, the comparison can only be done in an identified flight phase. The tests are performed at takeoff with a CAS between 90 and 200 kts and only if the received ADR data are valid. The thresholds used in the comparison are:
------------------------------------------------| Parameter | Threshold | |----------------------------------------------|
| Total pressure | 5 hPa |
| Averaged static pressure | 5 hPa |
| Left static pressure | 2 hPa |
| Right static pressure | 2 hPa |
| Angle-of-attack | 4. |
| Total air temperature | 3.C |
------------------------------------------------Table 1 : Comparison Thresholds
The messages resulting from a miscompare between parameters point the faulty sensor if it can be identified (one data differs from the two others which are identical) or the sensors which disagree. They are sent to the CFDIU in normal mode through label 356 of the ADR output and can be accessed by the LAST (PREVIOUS) LEG REPORT page on the MCDU menu. The messages have the following format: e.g. for the AOA sensors
341119 AOA SENSORi (3FPi) or
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341119 AOA SENSORi (3FPi)/AOA SENSORj (3FPj)
or
341119 AOA SNSR1 (3FP1)/SNSR2 (3FP2)/SNSR3 (3FP3)
The principle of the messages is the same for other sensors (ADM,
TAT).
B. Interactive Function
(1)
General The interactive mode is activated via the SYSTEM REPORT/TEST page related to ATA 34 chapter (Navigation) including the Air Data and Inertial Reference System (ADIRS). As this system includes two parts (Air Data Reference and Inertial Reference), two interactive functions are available:
-IR interactive function
(Ref. Fig. 017)
-ADR interactive function.
(Ref. Fig. 018)
(2)
IR interactive function
(Ref. Fig. 019)
(a)
LAST LEG REPORT This item describes the in-flight class 1 and 2 fault status of the selected IR during the last leg (flight leg 00).
(b)
PREVIOUS LEGS REPORT This item describes the in-flight class 1 and 2 fault status of the selected IR during the previous legs (flight legs 01-62).
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