Are you thinking of 91.17(b)?
Except in an emergency, no pilot of a civil aircraft may allow a person who
appears to be intoxicated or who demonstrates by manner or physical
indications that the individual is under the influence of drugs (except a
medical patient under proper care) to be carried in that aircraft.

So what about the person who doesn't appear to be intoxicated at the start
of a flight, but enters that state in flight. Does this FAR give you the
duty to eject mid-air, or would you be forgiven for landing as soon as
practicable?

-- David Brooks

"Dave S" wrote in message
ink.net...
I believe there is a restriction on carrying obviously intoxicated or
impaired individuals, but no restriction on serving the intoxicants.

Dave

Dave wrote:
I'm unable to find the regulation I was told about where passengers
may *not* consume alcohol in an airplane flying under part 91. Can
someone help?