ILS critical area when the tower is closed?

Steven P. McNicoll wrote:
wrote in message news:cjlgf.4216$pF.687@fed1read04...

Not so, Steve. It can cause control problems and certainly adversely
affect an autoland. That is why your handbook contains a caveat about
such approaches.

Approach couplers and autoland systems are weather independent.~



You're mistaken. There's no need for approach couplers and autoland systems
when the weather is good. It's not a problem because the pilots can see.


Well, okay, Steve. When I flew that equipment we often did autolands in
good weather as part of the continuing certification of the system for
CAT III operations. And, an air carrier flight could be going into a
non-towered airport using the ILS when the weather is "iffy" VFR.

The "need" to use couplers and perhaps autoland systems is determined by
the carrier and it POI.

wrote:

When I flew that equipment we often did autolands in
good weather as part of the continuing certification of the system for
CAT III operations. And, an air carrier flight could be going into a
non-towered airport using the ILS when the weather is "iffy" VFR.

The airlines will always fly the ILS if there is one up and running.
They are required to.

wrote in message news:3Bpgf.4263$pF.2160@fed1read04...

Well, okay, Steve. When I flew that equipment we often did autolands in
good weather as part of the continuing certification of the system for CAT
III operations.


Fine, there's no problem with that.



And, an air carrier flight could be going into a non-towered airport using
the ILS when the weather is "iffy" VFR.


We're not talking about "iffy" VFR, we're talking about good weather.



The "need" to use couplers and perhaps autoland systems is determined by
the carrier and it POI.


Well, their "need" to use couplers and perhaps autoland systems in good
weather does not give them priority over other users.

"Newps" wrote in message
. ..

The airlines will always fly the ILS if there is one up and running. They
are required to.


Do you suppose you could cite that requirement? I've known many an airline
flight to do a visual approach when there was a perfectly good ILS approach
available.

Newps wrote:

The airlines will always fly the ILS if there is one up and running.
They are required to.

Is this a FAR requirement or airline's operational procedural requirement?

--
Peter

"Peter R." wrote in message
...

Is this a FAR requirement or airline's operational procedural requirement?


Neither.

Peter R. wrote:

Newps wrote:


The airlines will always fly the ILS if there is one up and running.
They are required to.


Is this a FAR requirement or airline's operational procedural requirement?

Both. The FAA makes sure the airline puts it into their ops specs. If
there is an operating ILS to the runway that they are landing on they
have to use it. If a controller clears pretty much any jet with no
restrictions on the size of the pattern almost without fail they will
turn final at the outer marker.

"Newps" wrote in message
...

Both. The FAA makes sure the airline puts it into their ops specs. If
there is an operating ILS to the runway that they are landing on they have
to use it. If a controller clears pretty much any jet with no
restrictions on the size of the pattern almost without fail they will turn
final at the outer marker.


Please cite the applicable FAR.

On Sun, 20 Nov 2005 18:04:57 -0800, wrote:

Steven P. McNicoll wrote:

"Bob Gardner" wrote in message
news


How many fields are there where this is a concern? I would expect most
fields with the congestion to require marked ILS critical areas to have
full-time towers.


I can't provide a cite, but I was told recently that there are ILS
critical areas at part-time towered airports.

Portland, ME. http://avn.faa.gov/d-tpp/0511/00329AD.PDF has one for
runway 29.

On Mon, 21 Nov 2005 09:48:30 -0600, "Jim Macklin"
wrote:

Limitations on the approach chart probably do not allow the
ILS when the tower is closed or more than one hour after the
last weather observation.


RW 29 at PWM has an ILS hold charted on the airport diagram, but I
don't see anything preventing it's use when the tower is closed on the
approach chart:
http://204.108.4.16/d-tpp/0511/00329IL29.PDF