What is the transient limit for engine TRQ?

• A. 115%
• B. 110%
• C. 108.5%
• D. 120%

Answer: (A)

The transient limit for engine torque (TRQ) in the TH-73A is indeed 115%. This limit indicates the maximum amount of torque that the engine can produce during brief, transient conditions, such as during rapid changes in power settings or during specific operational scenarios where the engine may be subjected to short bursts of increased demand.

Understanding transient limits is crucial for safe flight operations, as exceeding these limits can negatively impact engine performance and longevity. The 115% transient torque limit provides a margin that allows for operational flexibility while still safeguarding the engine's integrity. Pilots must be aware of this limit, particularly during maneuvers that might require sudden power changes, to ensure they stay within safe operational parameters.