What is the maximum N_p during takeoff with the PMU Off?

The maximum N_p, or propeller speed, during takeoff with the PMU (Power Management Unit) turned off is 100% +/- 2%. This specification is essential for ensuring that the aircraft operates within safe limits, particularly during critical phases of flight such as takeoff. When the PMU is off, it does not automatically manage the propeller system, therefore the pilot must adhere to the manual operating limitations.

Operating at N_p above this maximum can lead to excessive wear or damage to the propeller and the engine system, potentially leading to a failure during takeoff. The provided range of 100% +/- 2% gives pilots a slight margin for fluctuations in propeller speed while maintaining a safe operational envelope.

The other options reflect lower limits or an overstated maximum that would not align with the established safety protocols for the aircraft. Hence, those choices would not appropriately safeguard the operation during the critical takeoff phase.