VNAV Path construction and Flap Speed
Hello Technical Types,
I am trying to sort out a question regarding the above. Particularly the 737 with 10.8a.
When constructing the planned VNAV path is the FMC expecting you to reduce to minimum maneouver speed for the current config. before selecting flap ie. within about 10kts of UP speed before selecting F1 and so on; or is it expecting you to select flap just under flap limiting speeds, which would seem like using flaps as drag to me, but there you go.
I've consulted all the usual sources and cannot find a reference either way, the implication in Vol.2 and Billy Bluffer seems to hint to the former. However many of my colleagues are prepared to stake their mortgage on the latter "...its why you always end up hign using VNAV!"
Any thoughts or better yet references you may have are gratefully recieved.