3. Job Set-up
__________ Subtask 34-13-00-860-094
A. Get Access
(1)
Put the ACCESS PLATFORM 2M (6 FT) in position in zone 125 to get access to the pitot probes 1 and 3 and in zone 126 to get access to the pitot probe 2.
(2)
Remove the cover from the pitot probe.
(3)
Put the ACCESS PLATFORM 2M (6 FT) in position in zone 128 to get acces to the static probes 7DA1, 7DA2, 8DA1 and 8DA2.
(4)
Remove the cover from the static probe.
(5)
Put the ACCESS PLATFORM 2M (6 FT) in zone 120 to get acces to the static probes 7DA3 and 8DA3.
(6)
Remove the cover from the static probe.
(7)
Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position in zone 231 to get acces to the AOA sensor 3FP1 (232 for 3FP2) (127 for 3FP3).
(8)
Remove the slip-on cover from the AOA sensor.
4. Procedure
_________ Subtask 34-13-00-220-050
A. Inspection/Check of the Pitot Probes (9DA1, 9DA2, 9DA3)
(1) Do a general visual inspection of the pitot probes.
(a)
Color During the ageing of the probe, the color of the tube becomes brownish and/or blackish. This coloration has no effect on the operation of the probe.
(b)
Make sure that the drain holes are not blocked.
-If a drain hole is blocked, do the flushing (Ref. TASK 34-10-00-170-001) of the main system, or (Ref. TASK 34-10-00-170-003) for the standby system.
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R **ON A/C 106-149, 213-213, 221-299, 301-399, 401-499,
Subtask 34-13-00-220-051-A
B. Inspection/Check of the Static Probes (7DA1, 7DA2, 7DA3, 8DA1, 8DA2, 8DA3)
(1)
Do a visual check of the static probes:
(a) If there is contamination, do the (Ref. TASK 34-10-00-170-002) of the main static circuit, or/and the (Ref. TASK 34-22-25-170-001) of the standby static circuit.
(2)
Do a visual check of the structure around the static probes,
-
if there is impact, refer to SRM 53-00-11 Pb101. **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220, Post SB 34-1280 For A/C 213-213, Subtask 34-13-00-220-051
B. Inspection/Check of the Static Probes (7DA1, 7DA2, 7DA3, 8DA1, 8DA2, 8DA3)
(1)
Do a visual check of the static probes:
(a) If there is contamination, do the (Ref. TASK 34-10-00-170-002) of the main static circuit, or/and the (Ref. TASK 34-10-00-170-003) of the standby static circuit.
(2)
Do a visual check of the structure around the static probes,
-
if there is impact, refer to SRM 53-00-11 Pb101. **ON A/C ALL
Subtask 34-13-00-220-052
C. Inspection/Check of the AOA Sensors (3FP1, 3FP2, 3FP3)
(1) Do a visual check of the AOA sensors:
(a) Make sure that there is no paint on the vane and on the mounting base of the three AOA sensors.
-if not, do the (Ref. TASK 34-11-19-200-001).
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(2) Manually turn the vane of the AOA sensors very carefully from the maximum to the minimum mechanical stops (+85. to -35.) and make sure that there is no hard point.
(a) if one vane has a hard point, replace the related AOA sensor (Ref. TASK 34-11-19-000-001) and (Ref. TASK 34-11-19-400-001)
5. Close-up
________ Subtask 34-13-00-860-095
A. Put the aircraft back to its initial configuration.
(1)
Install the slip-on cover on the AOA sensor.
(2)
Install the static cover.
(3)
Install the pitot cover.
(4)
Make sure that the work area is clean and clear of tool(s) and other items.
(5)
Remove the access platform(s).
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ATTITUDE, HEADING AND POSITION - DESCRIPTION AND OPERATION__________________________________________________________
R R R R R R R R R 1. General_______ The Inertial Reference (IR) portion of the Air Data/Inertial Reference Unit (ADIRU) provides main data sources which are precision attitude, magnetic heading references and navigation data to the aircraft avionics systems. The IR portion also provides selected Global Positioning System (GPS) data and accurate GPIR hybrid position. Attitude, heading and navigation data are displayed on the Electronic Flight Instrument System (EFIS) displays Primary Flight Display (PFD); Navigation Display (ND)) and on the VOR/DME RMI which recopies the heading data.
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