(2)
27-61-00/201, Spoiler/Speedbrake Control System
(3)
31-41-00/201, Engine Indication and Crew Alerting System (EICAS)
(4)
32-09-02/201, Air/Ground Relays
(5)
33-16-00/501, Master Dim and Test
B. Access
(1) Location Zones
211/212 Control Cabin - Section 41
C. Prepare for the Test
S 215-002
(1)
Make sure that no test equipment or covers are installed on the pitot probes, the angle of attack probes, or the total air temperature probe.
S 865-003
(2)
Supply electrical power (Ref 24-22-00/201).
S 715-004
(3)
Make sure the master dim and test system operates for the L AOA and R AOA annunciators (Ref 33-16-00/501).
S 715-005
(4)
Make sure the Engine Indication and Crew Alerting System (EICAS) operates (Ref 31-41-00/201).
S 215-006
(5)
Make sure the L AOA and R AOA annunciators on the auxiliary annunciator panel M10394 (panel P5) are on.
S 865-007
(6)
Put the computer select switch on the EICAS control panel (panel P9) in the AUTO position.
S 215-008
(7)
Make sure the EICAS message, PROBE HEAT, shows on the top EICAS display (panel P2).
D. Do a Test of the Angle of Attack Probe Heat System
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757 MAINTENANCE MANUAL
S 865-009 WARNING:_______DO NOT TOUCH THE PROBES DURING THE TEST. THE PROBES BECOME VERY HOT AND CAN BURN YOU. CAUTION: DO NOT OPERATE THE PROBE HEAT FOR MORE THAN 10 MINUTES.
_______ DAMAGE TO THE PROBE CAN OCCUR.
(1) Push and hold the WING ANTI-ICE WINDOW/PROBE HEAT test switch on the M10398 test panel (P61), in the WINDOW/PROBE HEAT position.
(2) S 215-010Make sure the L AOA and R AOA annunciators are off.
(3) S 215-031Make sure the EICAS messages, L AOA and R AOA PROBE, do not show on the top EICAS display.
(4) S 865-011Open this circuit breaker on the main power distribution panel, P6, and attach a DO-NOT-CLOSE tag: (a) 6L16 or 6L17, L AOA HEAT
(5) S 215-012Make sure the L AOA annunciator is on.
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