Power Ratings

Question 1

Explain LNC and how the RPM changes,
What happens in LNC if PDI is selected?

Answer 1

Reduces engine power to decrease noise level.

NP transitions from:
655 to 690 RPM when climbing through 20,500’
690 to 655 RPM when descending through 20,200’

Note when Prop De-icing is on, NP is automatically set to 730 RPM.