ILS critical area when the tower is closed?

On 11/20/2005 6:38 PM, Jose wrote:

the weather is below 800/2, in which case only IFR departures
will be of concern

People may be taxiing around the airport with no intention of taking
off, for example, to fuel up, to do maintanance, or to more the aircraft.

I suppose such an aircraft could call departure first, to ensure that
such operation will not interfere with anybody on approach.

Jose

With weather below 800/2, the only people in the vicinity of the
ILS critical area would be IFR departures, right? I can't think
of any reason to be taxiing to the departure end of a runway unless
you're taking off (or just landed). In either case, the flight would
be IFR due to the weather.

I was really thinking more of the case during VFR conditions where
the ILS system is being used more for practice. I think the bottom
line is, if you're using an ILS during VFR conditions, you should
expect some interference in the signal whether or not the tower is
in operation - since even if it is in operation, it doesn't have to
keep the ILS critical area clear unless weather is below 800/2.

Thanks,


--
Mark Hansen, PP-ASEL, Instrument Airplane
Sacramento, CA

With weather below 800/2, the only people in the vicinity of the
ILS critical area would be IFR departures, right?

I don't know. Therefore I wouldn't count on it. I suspect it depends
on the specific geography of the airport.

Jose
--
He who laughs, lasts.
for Email, make the obvious change in the address.

With weather below 800/2, the only people in the vicinity of the
ILS critical area would be IFR departures, right?

I can fly all day in 800/2 in my Champ.
All I need is 1 sm and clear of clouds.
At 70 mph, it takes a while to get anywhere.

"john smith" wrote in message
...

I can fly all day in 800/2 in my Champ.
All I need is 1 sm and clear of clouds.
At 70 mph, it takes a while to get anywhere.


Perhaps all night, but probably not all day. The operating hours of
part-time towers tend to be the daytime hours, so the hours that you can fly
with only one mile visibility while remaining clear of clouds tend to be
just the nighttime hours. Your Champ' will be limited to operating in an
airport traffic pattern within 1/2 mile of the runway, assuming it has the
required lighting.

In article et,
"Steven P. McNicoll" wrote:

"john smith" wrote in message
...

I can fly all day in 800/2 in my Champ.
All I need is 1 sm and clear of clouds.
At 70 mph, it takes a while to get anywhere.


Perhaps all night, but probably not all day. The operating hours of
part-time towers tend to be the daytime hours, so the hours that you can fly
with only one mile visibility while remaining clear of clouds tend to be
just the nighttime hours. Your Champ' will be limited to operating in an
airport traffic pattern within 1/2 mile of the runway, assuming it has the
required lighting.

For CB/CC/CDAS, yes.
Some CDAS will give you a Special if you ask for it.

"john smith" wrote in message
...

For CB/CC/CDAS, yes.


No, for Class G airspace.



Some CDAS will give you a Special if you ask for it.


Class D airspace when the tower is closed? Special VFR is available only in
a surface area, but SVFR also requires separation from IFR aircraft.