There is a procedure I've just been made aware of....
"It is called enhanced t.o. speeds and it is done by dispatch in (place) of assumed t.o. temps......not quite often used. Boeing talks about this in some of their CBTs and basically they bump speeds as much as 10 kts."
However, it's clearly different from setting V2+10 for all occasions
If the FD is truly ignored (procedures-wise) for the first 400' then what does it really matter what you have dialled in on the MCP? I presume that VNAV (above 400') will be using the V2 you entered on your TAKEOFF REF page, and not the MCP value.
"although the upper limit on the 400 and 777 is V2 + 15 for eng out and V2+25 all engines."
If this is what CX manuals say about the 747-400, then perhaps there are autopilot variations (I'm not surprised.... I remember that Cathay had a unique Rad Alt callout for the Kai Tak approaches). I've always understood that the 777 and 767 are +15kts and the 744 is +10kts. Our 744 AOM, Boeing Maintenance Manual and Engineering Training Notes are not ambiguous on this. Perhaps you could recheck your notes?
Thanks.
Rgds.
NSEU
Last edited by NSEU; 16th Jul 2007 at 01:39.