What does a flashing white box around the EGT during engine start indicate?

What does a flashing white box around the EGT during engine start indicate?

• A. Impending hot start
• B. Normal start
• C. No start
• D. Start aborted

Answer: (A)

During engine start, the Exhaust Gas Temperature is the key heat gauge that tells you how the flame is developing. A flashing white box around the EGT is a warning that an impending hot start is developing—the EGT is rising toward the hot-start limit. This cue is there to alert you early so you can monitor the start carefully and be ready to abort if the EGT continues to climb or refuses to come under control, protecting the turbine and related components from damage. This is different from a normal start, where the EGT stays within limits and no flashing box appears. It’s also not the signal for a no-start or a start-aborted condition, which would show different indicators.

During engine start, the Exhaust Gas Temperature is the key heat gauge that tells you how the flame is developing. A flashing white box around the EGT is a warning that an impending hot start is developing—the EGT is rising toward the hot-start limit. This cue is there to alert you early so you can monitor the start carefully and be ready to abort if the EGT continues to climb or refuses to come under control, protecting the turbine and related components from damage. This is different from a normal start, where the EGT stays within limits and no flashing box appears. It’s also not the signal for a no-start or a start-aborted condition, which would show different indicators.