During NR Power-On Maximum operation, what is the percentage limit?

• A. 95%
• B. 101%
• C. 103%
• D. 110%

Answer: (C)

In the context of NR (Rotor Speed) Power-On Maximum operation for the TH-73A, the correct percentage limit is 103%. This value is derived from the aircraft's operating limits established for safe and effective flight operations. The 103% limit allows for a slight buffer above the normal operating range, accommodating transient conditions during power-on maneuvers while ensuring that the aircraft's performance parameters remain safe.

Operating at this threshold indicates maximum efficiency and responsiveness in rotor dynamics, which is crucial for handling demands in various flight regimes. Exceeding 103% could potentially lead to adverse effects on engine performance or rotor integrity, thereby compromising flight safety. Understanding this limit is essential for pilots to safely manage engine and rotor performance during critical phases of flight.