I have never seen a POH that discusses instrument flight. (Note - my
experience is limited to GA, so maybe someone can tell me if the 777 POH and
all other material discuss how to fly IFR. I doubt that they do, but I
could be mistaken. I don't doubt that there is a volume of information that
uses the words primary, secondary, MTBF, etc - but that is not the same as
what is being discussed here). While you, Mr. Tarver Engineering, may be
the world's foremost expert on cool electronic gear for the big boys' jets
and have the FAA knocking at your door to find all the answers to
everything, I don't think what you are discussing is the same thing as the
original poster's (and most other replies) content. (Apparently you hold
your ideas in very high regard. Technically you sound very competent, but
you are consistently a bit off the subject that is being discussed on this
thread.)

Have you read "Instrument Flying Handbook?" (FAA-H-8083-15 - specifically
chapter 4 and the "Primary and Supporting Method sections?"

"For any maneuver or condition of flight, the pitch, bank, and power control
requirements are most clearly indicated by certain instruments. the
instruments that provide the most pertinent and essential information will
be referred to as primary instruments. Supporting instruments back up and
supplement the information shown on the primary instruments."

"Tarver Engineering" wrote in message
...

"William W. Plummer" wrote in
message
news:743Zb.13008$Xp.74133@attbi_s54...
Thanks, Richard. I was trying to find out if Tarver has any authority
to
comment on instrument flying. He has not received the training and
doesn't
understand the issues and thus, lacks credibilty.

I'll keep that in mind next time I write a page for someone's POH.

If you want to disagree with FAA on instruments, forget about using me as
a
proxy.