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-PS3 (high pressure compressor discharge pressure)
-PT (free stream total pressure).
The CONTROL PRESSURES page gives you the pressures the EEC uses to control the engine. All pressures are shown in psia.
P0 SELECTION
The P0 SELECTION page shows P0 values for channels A and B, and P0 for air data computer (ADC) 1 and 2. SEL P0 is the pressure the EEC uses to control the engine.
The ACT CH A shows the active channel or the channel that controls the engine. The GMM CH A shows the ground maintenance mode (GMM) channel or the channel that controls MCDU BITE.
PS3 SELECTION
The PS3 SELECTION page shows PS3 values for channels A and B. SEL PS3 is the pressure the EEC uses to control the engine.
The ACT CH A shows the active channel or the channel that controls the engine. The GMM CH A shows the ground maintenance mode (GMM) channel or the channel that controls MCDU BITE.
PT SELECTION
The PT SELECTION page shows PT values from air data computer (ADC) 1 and 2. SEL PT is the pressure the EEC uses to control the engine.
The ACT CH A shows the active channel or the channel that controls the engine. The GMM CH A shows the ground maintenance mode (GMM) channel or the channel that controls MCDU BITE.
Training Information Point
If a parameter is not available, (?) symbols show for the parameter. If a parameter is out of range, (-) symbols show for the parameter.
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737-700 MAINTENANCE TRAINING MANUAL
A73-21-00-249.fm
NOTE: IF A VALUE IS NOT AVAILABLE, THE MCDU SHOWS ? ? IF A VALUE IS OUT OF RANGE, THE MCDU SHOWS - -
ENGINE FUEL AND CONTROL -ENGINE CONTROL - EEC BITE - INPUT PAGE 9
January 1, 2004
73-21
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
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January 1, 2004
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737-700 MAINTENANCE TRAINING MANUAL
ENGINE FUEL AND CONTROL - ENGINE CONTROL -EEC BITE - INPUT PG 10
General
The CONTROL TEMPERATURES page lets you monitor these control temperatures:
-TAT (Total air temperature)
-T25 (high pressure compressor inlet temperature)
-T3 (high pressure compressor discharge temperature)
-TCC (high pressure turbine case temperature)
-T495 (low pressure turbine second stage nozzle temperature).
The CONTROL TEMPS page shows the temperatures the EEC uses to control the engine. All temperatures are shown in degrees celsius.
TAT SELECTION
The TAT SELECTION page shows T12 values for channels A and B, and TAT values for air data computer (ADC) 1 and 2. SEL TAT is the temperature the EEC uses to control the engine. T12 is the total air inlet temperature detected by the T12 engine sensors.
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