B757 VNAV manoeuvre margin
I have always understood that with VNAV engaged the manoeuvre capability is 1.6g to max.lift coefficient at .80M for CAA aeroplanes and 1.3 for FAA aeroplanes.But when selecting the MAINT page of the FMC on our CAA aeroplanes the manoeuvre margin reads 1.3.This is the same whether it's on the non-PIP or Pegasus FMC's.Asking around the answers vary.One is that VNAV ensures 1.6 regardless of what the box says,another is that it should read 1.6 and you can select 1.6 in the scratch pad and change it but it's an engineer's job.Most of the time people just shrug their shoulders!As this has implications regarding what the FMC tells you regarding climb and cruise capability I was wondering what the definitive answer is.Any suggestions?
[ 17 October 2001: Message edited by: EPRman ]