1) Speed select is displayed in two forms: a) 100-399 knots in increments of 1 knot. b) GUN 051-099;
0.400-0.950 Mach in increments of 0.010 Mach. c) GUN 001-050, 101-999; 0.400-0.950 Mach in increments of 0.001 Mach.
AIRSPEED/MACH
AUTOTHROTTLE CONTROL KNOB AND
ARM SWITCH LOCAL/REMOTE
SELECT AIRSPEED/MACH SWITCH/LIGHT
SELECTOR SWITCH EPR OR THR AS INSTALLED
Mode Control Panel - Autothrottle Functions Figure 6
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2) An airspeed/Mach selector (SEL) switch transfers the speed display between airspeed and Mach. Airplane Mach must be at least 0.40 before transfer to the Mach display can be accomplished. Rotating the IAS/MACH control knob adjusts the speed/Mach display during local command. Pushing the knob transfers control of the speed reference bug on the MASI between the MCP and FMC. The speed/Mach display is blank when control is from the FMC.
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Electronic Attitude Director Indicator (EADI) - Autothrottle Displays (Fig. 7)
(a)
Two types of status modes are displayed on the EADI: 1) A/T for autothrottle displayed. 2) F/S for autothrottle off, no autopilot speed control, and
F/S reflecting a limit rather than airspeed bug.
(b)
Two types of autothrottle modes are displayed on the EADI: 1) EPR, IAS, MACH, FL CH, GA, IDLE, TEST, THR HOLD for
operating modes. 2) FLAP LIM, ALPHA, IAS LIM, MACH LIM for limit modes
(c)
A fast/slow display on the left side of the EADI indicates speed performance to the crew. The display is active when within 10 knots of the reference airspeed.
EICAS Display Unit - Autothrottle Functions (Fig. 8)
(a)
The upper EICAS display unit provides the primary engine parameters and TMC computed data required to set and monitor thrusts. These parameters are displayed continuously in both analog type round dial and digital readout for the left and right engines.
SPEED DEVIATION POINTER
FAST/SLOW
ANNUNCIATION
AUTOTHROTTLE MODES
ENGAGED
EPR
SPD
FLCH
GA
IDLE
STATUS
TEST
A/T
THR-HOLD
F/SLIMIT FLAP LIM (EXAMPLE DISPLAY FORMAT) ALPHA SPD LIM
EADI - Autothrottle Displays
Figure 7
D01585
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MAXIMUM THRUST LIMIT MARKER (AMBER)
REFERENCE/TARGET THRUST BUG
COMMANDED
THRUST LEVEL
COMMAND
SECTOR
REFERENCE/TARGET
THRUST READOUT
TOTAL AIR
SELECTED
TEMPERATURE
TEMPERATURE
READOUT
READOUT
REFERENCE THRUST LIMIT MODE
ACTUAL THRUST LEVEL READOUT
ACTUAL THRUST LEVEL POINTER
PRIMARY THRUST PARAMETER READOUT
UPPER EICAS DISPLAY UNIT
DISPLAY COMPUTER BRT THRUST REF SET
BRT
ENGINE STATUS EVENT AUTO BAL MAX INDBOTH
RECORD RL
RESET PULL RL
EICAS CONTROL PANEL (EXAMPLE)
EICAS Display - Autothrottle Functions
Figure 8
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