S 865-092
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747-400 MAINTENANCE MANUAL
S 715-102
(17)
Pressurize hydraulic system No. 1 and 4 (AMM 29-11-00/201).
S 715-093
(18)
Make sure that these EICAS advisory messages show:
HEAT R TAT HEAT L TAT
S 715-103
(19)
Remove pressure from hydraulic system No. 1 and 4 if it is not necessary (AMM 29-11-00/201).
S 865-095
(20)
Remove the actuators from switches S800 and S801.
S 445-056
(21)
Do this task: "Put Safety-Sensitive Systems Back to the Condition before Air Mode Simulation" (AMM 32-09-02/201).
S 415-013
(22)
Install covers on probes after they become cool.
S 865-061
(23)
Set the FUEL CONTROL 1, switch on the P8 control stand to CUTOFF.
S 865-060
(24)
Close the following circuit breakers on the P6, Main Power Distribution Panel:
(a)
6F1, IGN 1 ENG 1
(b)
6K19, IGN 2 ENG 1
(c)
6G19, STBY IGN ENG 1
S 865-014
(25) Remove electrical power (AMM 24-22-00/201).
TASK 30-31-00-715-083
3. Ground Test - Pitot-Static/TAT/AOA Anti-Ice System
__________________________________________________
A. General
(1)
This test does a check of the air mode operation of the probe heaters only.
(2)
This test does not do a check of the ground mode operation of the probe heaters.
B. Equipment
(1) Digital Multimeter, Fluke Model 77 or equivalent
NOTE: This is used for alternative voltage measurements when you do
____ a check of the probe heat diode assembly.
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MAINTENANCE MANUAL
C. References
(1) AMM 24-22-00/201, Manual Control
D. Access
(1) Location Zone
221, 222 Control Cabin
E. Preconditions
S 865-098
(1) These conditions are necessary for this task:
(a)
Electrical power on (AMM 24-22-00/201).
(b)
Integrated Display System (IDS) is serviceable (AMM 31-61-00/501).
F. Prepare for the Test
S 865-084
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-086
(2)
Set the GND TEST switch on the P461, Overhead Maintenance Panel to ENABLE.
S 865-087
(3)
Prepare the CDU for the test:
(a)
Push the MENU key on the CDU to show the MENU.
(b)
Push the line-select key (LSK) that is adjacent to <CMC to show the CMC MENU.
(c)
If <RETURN shows after you push the LSK, push the LSK that is adjacent to <RETURN until you see the CMC MENU.
(d)
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.
(e)
Push the NEXT PAGE key until you find <30 ICE AND RAIN.
(f)
Push the LSK that is adjacent to <30 ICE AND RAIN to show the GROUND TESTS menu for the ice and rain system.
NOTE: If INHIBITED shows above the applicable prompt (<PROBE
____ HEAT L or <PROBE HEAT R), the test will not operate.
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本文链接地址：747-400 AMM 飞机维护手册 防冰和排雨 ICE AND RAIN PROTECTION(31)
