Originally Posted by
FatPilot
Numerous wrong statements in that post including a misunderstanding of the RA system AND the IVSI.
Boeing do not refer to rate; they refer to climb - on the altimeter.
Yes, yes, feel free to check any Boeing manual however if you want relevant information on this event may I suggest you try something written by Airbus.
Very sad what happened...
Hopefully, we may learn some things...
IMHO the
ONLY RELIABLE INDICATION
that should be looked at and followed
is an
INCREASE in
ALTITUDE ON the
ALTIMETER,
which confirms a
”POSITIVE CLIMB !”
So, forget the VSI (and all others…) and
look at the ALTIMETER !
It’s a paradox…
Just ask a pilot: ”Where do you see that you are climbing?”
And 9 out of 10 will reply: ”On the vertical speed indicator!”
Hence: That’s where most are looking… At the VSI.
(However, the VSI is used for establishing or maintaining a certain rate of climb or descent…)
Whilst it is that simple,
Still nowadays it takes me numerous briefings and sessions,
and almost every half year I have to repeat it,
to try to really ’delete’ the call:
”positive rate !” from the brains of experienced pilots,
coming from everywhere and from different established airlines,
flying Airbus and Boeing and others...
Even when they ’seem’ to understand all the issues involved.
It’s just because for many
’rate’ has been ’slammed into’ their minds during their very first flying lessons,
(as was done to me in the early ’sixties’)
their eyes are looking at the wrong instrument…
(A totally different, but similar issue is 'deleting' the "Ready for take off !" call, to be replaced by: "Ready for DEPARTURE !" ...)
Just always learning, learner . . .
