On Mar 2, 8:41 am, Sam Spade wrote:
wrote:

Some specfics will be helpful now: the airport is Flabob, KRIR, field
elevation 764 MSL. I spoke with several folks and each seemed to
have a different take. The TRACON controller was the most helpful/
sympathetic; he told me his Minimum Vectoring Altitude in that area is
3200 [in addition to a small hill off the departure end of RWY 24
there are taller rocks to the North].

Runway 24 takes you into the KRAL Class D almost immediately. I am sure
no one likes that when they can't see you.

Runway 6 is pointed towards terrain that causes the MVA to rise to 4000
quite close-in. The airport is in a terrible location both airspace and
terrain-wise for IFR procedures. If you takeoff on 6 not only do you
have a terrain problem there is an issue of the Ontario Class C with a
floor of 2700 in that area, below any MVA.

The issue witih KRAL is a non-issue as far as my question is
concerned. There are many cases in which multiple towered airports
are near each other and you can still get an IFR departure; both
Northern and Southern California have many examples: SFO and SQL, HWD
and OAK, SJC and RHV, HHR and LAX. The TRACON works it out; that is
part of their job.

Regarding terrain: I'm talking about a departure off 24 with a
ceiling high enough to see and avoid all obstacles which, in any
event, is not or should not be ATC's issue. I don't think either of
these concerns is the cause of the issue here.