"Andrew Gideon" wrote in message

If your CFI didn't know that it was closed for noise, she/he might not
have
known had it been closed for safety-related reasons. This is exactly the
issue I've found myself having with "instructor in command" (nice label,
BTW!).

Personal example: I failed my PPL checkride because of the Xctry section,
where I picked a private field as a waypoint. My instructor, who moved from
another state, referred to the field all the time. I should have known
better; I had already suspected he was wrong, but who argues with their
instructor? When the examiner asked "Where's your waypoint?" and I
pointed to an old, abandoned airstrip, he pointed to a field near it and
said "Nope. THAT'S the airstrip. The owner is a farmer, and when he wants
to fly, he checks his windsock and mows the field accordingly. You should
have been taught not to use private airstrips as waypoints."

I should have stuck with my hunch and picked a different waypoint when I
practiced the SAME cross country with the instructor onboard the day before.

-c