🔍 Key Concepts

• Gas turbine starting sequence – order in which the starter, gas generator (GG), and power turbine (PT) accelerate • Difference between gas generator speed protection and power turbine speed/temperature protection during AUTO START • What a false start alarm usually protects against during the early part of the start cycle

💭 Think About

• Think about which part of the engine must prove it can accelerate correctly before light‑off and power turbine rotation are allowed to continue. • Ask yourself: during an automatic start, what condition would show that the starter is working but the gas generator is not responding properly? • Consider which options talk about protection that is too late in the start sequence to be called a false start, versus protection that acts while the starter is still trying to bring the GG up to self‑sustaining speed.

✅ Before You Answer

• Identify on the GT-0016 panel where gas generator (GG) speed is monitored and how that is used in the AUTO START logic. • Decide at what point in the start the indicator would label the attempt a false start – is it while the starter motor is still energized, or after the power turbine is already turning and firing has occurred? • Eliminate any choices that depend on power turbine temperature or RPM after the gas generator has already reached normal light‑off conditions, since those are typically separate over‑temp or malfunction protections, not false start detection.