737 Flight Crew Operations Manual
Engines, APU -
Over/Under – Displays
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7.11.2 D6-27370-866-EGP
Total Air Temperature, Thrust Mode Display, Selected
Temperature and Autothrottle Limit
1 Total Air Temperature (TAT) Indication
Displayed (label – cyan, temp – white) – total air temperature (degrees C).
2 Thrust Mode Display
Displayed (green) – the active N1 limit reference mode.
With N1 Set Outer Knob (on engine display control panel) in AUTO, active N1
limit is displayed by reference N1 bugs.
With N1 Set Outer Knob (on engine display control panel) in either 1, 2 or BOTH
(other than AUTO), the thrust mode display annunciation is MAN.
Active N1 limit is normally calculated by FMC.
Thrust mode display annunciations are:
• TO – takeoff
• TO 1 – derated takeoff one
• TO 2 – derated takeoff two
• D-TO – assumed temperature reduced thrust takeoff
• D-TO 1 – derate one and assumed temperature reduced thrust takeoff
• D-TO 2 – derate two and assumed temperature reduced thrust takeoff
•CLB – climb
• CLB 1 – derated climb one
• CLB 2 – derated climb two
• CRZ – cruise
• G/A – go–around
June 5, 2009