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B737 Common VNAV

Hi All-

I am brand new on type, and I trained using the ‘Basic’ VNAV on the 737, but now I will be going on to use the ‘Common’ VNAV option… I can’t seem to find anywhere that explains exactly what the differences are.

My previous understanding was that VNAV + SPD INTV to a speed higher than target behaved in a similar manner to LVL CHG in a descent, but it appears the same is not necessarily true for Common VNAV. if anyone could point me in the direction of something handy, it would be well appreciated!

I'm not sure what you're talking about, but I suppose you're talking about FMC U14.0?

FMC Update 14 (b737.org.uk)

VNAV path tracking priority energy compensation.
1. Maintains vertical path by adding thrust when a speed increase command is received via speed intervention.
2. FMC will set VNAV target altitude to the current go-to waypoint constraint altitude if the waypoint is an “at or above” altitude constraint to prevent unintended climbs in descent.