What does the acronym TGT stand for?

• A. Turbine Gas Temperature
• B. Total Gas Temperature
• C. Turbo Generator Temperature
• D. Turbine Generator Temperature

Answer: (A)

TGT stands for Turbine Gas Temperature. This is the temperature of the hot gas in the turbine section of the engine—the gas that expands through the turbine to drive the compressors and accessories. It’s a critical parameter because turbine blades are heat-limited; the engine’s fuel control uses TGT to regulate power and prevent overheating, protecting engine health and performance.

The other phrases don’t fit because they refer to different things. Total Gas Temperature isn’t the standard label for this cockpit readout, and Turbo Generator Temperature or Turbine Generator Temperature would imply the temperature of a generator or a different subsystem, not the turbine gas itself.