Before committing to forward flight, which two indications should be checked on EICAS and PFD?

• A. N1, N2
• B. N2, NR
• C. N1, NR
• D. N2, TOT

Answer: (C)

Before committing to forward flight, you must confirm that engine power and rotor speed are both within safe limits. The two indicators you should check are N1 and NR. N1 represents the gas generator speed and tells you how much power the engines are prepared to deliver. NR is the rotor speed and shows the actual rotor RPM. If N1 is not in the expected range, you may not have enough thrust to accelerate or climb. If NR is outside the normal range, the rotor system may not sustain stable flight or could indicate a potential rotor issue. Checking N1 on the EICAS and NR on the PFD provides the essential assurance that the helicopter has sufficient power and the rotor is turning at the correct speed for safe forward flight. While N2 and TOT are monitored, they do not provide the same direct check of power availability and rotor readiness required for this transition.