When does IFR begin in VFR?

On Wed, 09 Feb 2005 04:12:34 GMT, John R. Copeland wrote:

You might squawk 0177, but never 0199.

DUHHHHH, Thanks John for the clarification.

Maybe the viz was too low in the cockpit, and I saw the 7's as 9's *big
smile*.

Allen

A Lieberman wrote:


Though, I can't answer your question in regards to the post, I know that at
JAN, if I request local VFR, they will ask me to squawk 0101 through 0150.
If I ask for a local IFR clearance, they will have me squawk 0151 through
0199.

Maybe the same works for cross country trips, e.g last two digits for VFR
ends between certain numbers???

There's no difference in the code numbers for IFR and VFR. What there is
are codes good internal to a facility and external to a facility.

A Lieberman wrote:
On Tue, 08 Feb 2005 11:25:23 -0500, Dave Butler wrote:


Newps wrote:

The squawk was an IFR squawk. There's a difference. A VFR one won't
give controllers a low altitude alert, an IFR squawk will.

How do you know it was an IFR squawk?


Dave

Though, I can't answer your question in regards to the post, ... snip

Thank you, Allen. My question to newps was how he knew that in this particular
case, the squawk assigned was an IFR one.

"Ron Natalie" wrote in message
m...
There's no difference in the code numbers for IFR and VFR. What there is
are codes good internal to a facility and external to a facility.

Not exactly sure what you mean by that, but if you mean codes are assigned
willy-nilly regardless of whether the aircraft is VFR or IFR, that's not
entirely true.

Terminal facilities (and maybe centers) split parts of their beacon code
allocation into subsets. The computer is then programmed to perform the
different functions associated with whatever subset a discrete code is in.
For example: In one facility I recall 01XX was used for VFR, 04XX for Local
IFR, and there were a couple others. There were also several sub-subsets
for stuff like VFR w/MSAW or the local traffic/police helicopters.

When you entered the data to generate a track you hit one key for IFR and a
different key for VFR (actually VFR was assumed and no keystroke was
needed). The computer then assigned the next available discrete code from
the appropriate block.

IF a person knows what subset that particular facility has assigned to what
function it's possible to tell a VFR code from an IFR code.

"A Lieberman" wrote in message
...

Though, I can't answer your question in regards to the post, I know that
at
JAN, if I request local VFR, they will ask me to squawk 0101 through 0150.
If I ask for a local IFR clearance, they will have me squawk 0151 through
0199.


Really? They issue beacon codes above 0177? How do you enter them?

"Ron Natalie" wrote in message
m...

There's no difference in the code numbers for IFR and VFR. What there is
are codes good internal to a facility and external to a facility.


There is a difference between internal codes used for IFR and those used for
VFR. VFR codes don't activate MSAW.

KP nospam@please wrote:
Terminal facilities (and maybe centers) split parts of their beacon code
allocation into subsets. The computer is then programmed to perform the
different functions associated with whatever subset a discrete code is in.
For example: In one facility I recall 01XX was used for VFR, 04XX for Local
IFR, and there were a couple others. There were also several sub-subsets
for stuff like VFR w/MSAW or the local traffic/police helicopters.

But, none of this is really important to pilots. Pilots have no way
of knowing how a facility allocates their codes, and even if they
caught onto some patterns over time, the facility is free to change
their internal practices without any notice to pilots.

This originally came up because somebody suggested that a pilot might
determine if they are IFR or VRF based on what kind of code they got
and act accordingly. I think that would be rather foolish.

Steven P. McNicoll wrote:
Really? They issue beacon codes above 0177? How do you enter them?

0200, perhaps?

"Roy Smith" wrote in message
...

0200, perhaps?


That's beyond the 0151 to 0199 range.

Really? They issue beacon codes above 0177? How do you enter them?

0200, perhaps?

That's beyond the 0151 to 0199 range.

Don't be silly. 0200 has a two, and three zeros. That adds up to
two. (it's those zeros that bring it down) 0199 has only one zero, a
one, and TWO nines. It's way bigger than 0200. So, 0200 has to be
less than 0199

Any fool can see that 0200 is bigger than 0151, because two hundred is
bigger than one hundred fifty one.

So, 0200 is right in the proper range, between 0151 and 0199.

Jose d
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