For all air starts, ITT must be at or below what temperature?

For all air starts, ITT must be at or below what temperature?

• A. 90C
• B. 100C
• C. 80C
• D. 95C

Answer: (A)

During an air start, Inter-Turbine Temperature (ITT) is closely watched to keep the engine’s hot section from overheating as the core spools and fuel begins to burn. The maximum ITT allowed during the start is 90 C. Keeping ITT at or below this value protects turbine blades and other hot‑section components from excessive thermal stress while the start progresses. If ITT rises above 90 C, the start should be aborted or adjusted to prevent damage. The other temperatures listed aren’t the published limit for air starts in this procedure.

During an air start, Inter-Turbine Temperature (ITT) is closely watched to keep the engine’s hot section from overheating as the core spools and fuel begins to burn. The maximum ITT allowed during the start is 90 C. Keeping ITT at or below this value protects turbine blades and other hot‑section components from excessive thermal stress while the start progresses. If ITT rises above 90 C, the start should be aborted or adjusted to prevent damage. The other temperatures listed aren’t the published limit for air starts in this procedure.