We originally used the Boeing approved method and then thanks to some cross pollination from other airlines tried the disarm speed mode. Initially I did find it could be confusing. But then when I had got used to it we changed back, due to some of the reasons already mentioned.
As with everything in life there are advantages and disadvantages. The min speed protection and simpler go-around are obvious. I seem to remember in gusty weather it messing with the MCP selected speed, which was irritating.
Denti's airline was pure 737-300 at the time as I remember. We were predominantly NG. I wonder if both aircraft behave the same in this respect and whether that might have affected preferences.
Last edited by lederhosen; 8th Mar 2009 at 14:38.