Originally Posted by
Smokey23
Actually, we started using VNAV in 2010 and as any SWA flight attendant will tell you, the rides on the descent (and climb) most certainly did NOT get smoother! V/S and CWS pitch may seem like anachronisms to many, but in reasonably competent hands they absolutely provide a smoother ride than George chasing the airspeed.
Ok, I gotta agree with that one.
Delta guys should not be bragging about the VNAV on our 737s.
When it comes to VNAV descents, the Smiths FMS on Delta 737NGs is a piece of junk.
It does OK in climbs or down low at low speeds (ie -- approaches). But in a descent from cruise it never seems to get it right. It is highly likely to overspeed the airplane, overshoot the crossing restriction or get 20 knots slow. (or all three)
The Honeywell VNAV on our 757s and 767s is far superior.