Originally Posted by
gulliBell
Reason being, there are two N2 needles and one NR needle. If the big needle was NR, there wouldn't be enough length in the 2 shorter N2 needles so the "1" and "2" flags on the respective needles didn't overlap.
Well if all three are lined up it doesn't matter and if you have a non- engagement or drive shaft failure the eng needle number will appear. But perhaps I am grinding the coffee a little fine ...I just think that Rotor RPM is the most important indication in the cockpit.
I was always taught...caution light, strange noise, disturbance in the force...check Rotor RPM and control that before you do or say anything else.