* SEE WDM EQUIPMENT LIST
Pitot-Static/TAT/AOA Anti-Ice System - Component Index
Figure 101 (Sheet 2)
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TOTAL AIR
TEMPERATURE
PROBE (REF)
SEE A
ANGLE OF ATTACK
SENSOR (REF)
PITOT-STATIC SEE B
PROBE (REF)
SEE C P6 PANEL
FLIGHT COMPARTMENT
SENSOR
VANE
TOTAL AIR TEMPERATURE PROBE (REF)
A
ANGLE OF ATTACK SENSOR (EXAMPLE)
B
PITOT-STATIC PROBE (REF) C
Pitot-Static/TAT/AOA Anti-Ice System - Component Location
Figure 102
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PITOT-STATIC, TOTAL AIR TEMPERATURE PROBE AND ANGLE OF ATTACK
_____________________________________________________________ SENSOR ANTI-ICE SYSTEM - ADJUSTMENT/TEST
________________________________________
1. General_______
A. There are three tasks in this subject. The first task is an operational test for the Pitot-Static/TAT/AOA Anti-Ice System. In this procedure, EICAS messages are monitored when the system is operated.
B. The second task is a CMCS ground test of the probe heat system. In this test, you will use the CMC to do a test of the system. You will look for CMC fault messages if the test result is not PASS.
C. The third task is a system test of the operation and the failure
indication of each probe heater. The test has these parts:
-Energize the system
-Feel near the probes to make sure that they become hot
-Look to see that EICAS messages show at the correct times
During the test, it is necessary to remove and install relays in the P414 and P415 panels. It is also necessary to set the N2 speed cards in the electrical systems card file to the test mode.
D. Keep the time for which probe heat is applied to a minimum. There may be probe damage if heat is applied for too long.
NOTE: A black oxide heat discoloration shows on the forward end
____ of the pitot tubes when the heater is operated on the ground. This does not mean that the probes are damaged.
TASK 30-31-00-715-001
2. Operational Test - Pitot-Static/TAT/AOA Anti-Ice System_______________________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 31-61-00/201, Integrated Display System
(4)
AMM 32-09-02/201, Air/Ground Relay System
(5)
AMM 32-21-00/001, Nose Gear
(6)
SSM 30-31-01, SSM 30-32-01, SSM 30-33-01
(7)
WDM 30-31-11, WDM 30-31-21, WDM 30-32-11
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MAINTENANCE MANUAL
B. Access
(1) Location Zone 221 Control Cabin, LH 222 Control Cabin, RH 211 Passenger Cabin, Nose to First Door - Upper Left P/S
Probe and Left TAT Probe 212 Passenger Cabin, Nose to First Door - Upper Right P/S Probe and Right TAT Probe 115 Area between Nose Gear Well and Fuselage - Lower Left P/S Probe and Left AOA Sensor Vane 116 Area between Nose Gear Well and Fuselage - Lower Right P/S Probe and Right AOA Sensor Vane 117 Electrical and Electronics Compartment - P414 Left Power Distribution Center 118 Electrical and Electronics Compartment - P415 Right Power Distribution Center 715 Nose Landing Gear
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