Holding speed A320 v2500
G'day,
Other day entering the hold, actually in managed speed, Inoticed that the aircraft was holding at about green dot +20. Now my memory is crap, so I had to go looking in the doorstop of our library, FCOM 4.
Found that our 320's with v2500's held at gd +20, but all other aircraft in the fleet held at green dot.
Now, I have a theory why... GD has the best l/d ratio when straight and level, but in the hold when more than half the time is spent turning, it doesn't represent the most econ speed to hold at. Having slightly higher speed whilst in a banked turn would then be best for min fuel burn.
My question is, why did they do this only on the A320 and not 319/321?