VFR Corridor in BRAVO Transition Question

sdfcvoh

sdfcvoh

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I was just doing some AIM review and came upon this tidbit talking about a frequency I don't believe I've ever used......

(c) Aircraft not landing or departing the primary airport may obtain an ATC clearance to transit the Class B airspace when traffic conditions permit and provided the requirements of 14 CFR Section 91.131 are met. Such VFR aircraft are encouraged, to the extent possible, to operate at altitudes above or below the Class B airspace or transit through established VFR corridors. Pilots operating in VFR corridors are urged to use frequency 122.750 MHz for the exchange of aircraft position information.

I just wondered if anyone could share some detail regarding the 122.75 mentioned? Of the dozens of time's I've transitioned through B up in PHX, I don't believe I've ever done anything other than monitor and remain with Approach/Departure after clearance was issued into B. Is this mention in the AIM of 122.75 referencing another frequency we should monitor? Wow - I feel like a complete doofus asking this!:drool:
 
sdfcvoh said:
Is this mention in the AIM of 122.75
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This frequency is the air-to-air "chat" frequency, which is what you should use to talk with another airplane when not in the vicinity of the airport. Note that the commonly used frequency "123.45" is not authorized for this purpose.

The AIM lists one other frequency for "air-to-air", 122.85, but the actual FCC regs say this frequency has other restrictions associated with it.
 
Thanks! That makes great sense, too.
I'll actually follow procedure next time I'm in a B-Corridor!:panic:
 
If you're in the corridor, then you are not in the Bravo airspace, you're below it therefore you are not required to have two-way comms with anyone therefore if someone else is in the corridor with you, how would you know where they are and vice versa? If you are talking with approach then have them looking out for you, but this frequency is for use when you're not talking to them. What if you called up one day and the space was jammed with planes and they told you to remain outside B, and you keep hearing them say that to a bunch of planes, so you proceed down to stay out of the B and head for the corridor, wouldn't you want to know where those other planes who are doing the same thing are?
 
Goldmember said:
If you're in the corridor, then you are not in the Bravo airspace, you're below it therefore you are not required to have two-way comms with anyone therefore if someone else is in the corridor with you, how would you know where they are and vice versa? If you are talking with approach then have them looking out for you, but this frequency is for use when you're not talking to them. What if you called up one day and the space was jammed with planes and they told you to remain outside B, and you keep hearing them say that to a bunch of planes, so you proceed down to stay out of the B and head for the corridor, wouldn't you want to know where those other planes who are doing the same thing are?
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Not really. The transitions through B in PHX certainly are in B and require a "Cleared to enter Bravo". Maybe you are thinking about something else.

But now I think I'm confusing Transitions and Corridors.......(edit)
 
The "East" and "West" transitions over PHX Sky harbour airport are not corridors. They are class B airspace and approach control clears you into class B airspace for the transitions.

I believe LA's class B airspace has VFR corridors through the airspace. You can fly those without talking to approach control, but should be on the advisory frequency and do position reports per the AIM.
 
Is this what you are referring to? (Meaning the dark blue shaded thick lines.)
 

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phx has no vfr corridors only transition routes that require clearence- instructions on terminal chart and vfr flyways that keep you clear of the bravo located on the back of the terminal chart
 
TheAlchemist said:
LAX is got corridors...there are 4 (i think) different corridors. One of them uses the air-to-air frequency.
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The special flight rules area (using an air to air freq) isn't a CORRIDOR. it is as it says, a special flight rules area.

A corridor is a bit of space that is devoid of class B.

A pilot is allowed to pass through the LAX special flight rules area as long as a pilot follows the proper procedures published on the LAX TAC chart.
 
Yeah, I think we are getting a little confused here on what a corridor is. In and around Chicago there are VFR corridors which are designated routes that keep you OUT of the class B which is what I was talking about. Never been out west so I don't know if what you are calling a corridor is a transition or if I have it backwards but I think we are just about on the same page here. A transition is, as the name implies, a "transit" through the airspace, a "corridor" is basically a window under the airspace.
 
Its all clear now. My experience has always been in "Transitions" and I read into the Corridors as if they were transitions.

Hey everyone - thanks for for helping clear this up.:)
 
just to be clear, there are 3 things:

VFR corridors
VFR transitions
VFR Special flight rules area (there is only one, LAX, of those that I know of personally).
 
Codyjp said:
The special flight rules area (using an air to air freq) isn't a CORRIDOR. it is as it says, a special flight rules area.

A corridor is a bit of space that is devoid of class B.

A pilot is allowed to pass through the LAX special flight rules area as long as a pilot follows the proper procedures published on the LAX TAC chart.
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I see...thanks! But what is the difference?
 
The key to seeing that a VFR corridor exists is something that looks like this attachment. Note the areas on the attachment that show two floors and ceilings which leave a "void" of airspace in between. That airspace in between is the VFR corridor. It can only exist around Bravo airspace. Also a note, the VFR corridor is Echo airspace. 122.75 is the frequency for communication within that airspace if you choose to not talk to approach control. (I think you'd be crazy not to talk with them, but it is allowed.)

This is the first time I've actually been aware of exactly what the VFR Corridor referred to. Hope helps someone on a studying rampage like me!
 

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