RNAV 35 Ardmore Downtown Executive 1F0

You are going the wrong way to get turned around for the transition radial headed south. Somewhere in the certification of the procedure it was determined that the turn was to far and puts the aircraft out of position to regain the southbound radial for the transition.

If you really need it, ask for a hold north on the 360R for one turn prior to executing the approach. This will put you on a good heading across the VOR for the transition.
 
BillTIZ said:
Somewhere in the certification of the procedure it was determined that the turn was to far and puts the aircraft out of position to regain the southbound radial for the transition.
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Yes, par 1510 in TERPs (link in fourth column, row four: http://www.avclicks.com/lessons.html) limits en route turns between segments to 120°. Those two airways would exceed that in order to connect to the feeder.

dtuuri
 
Brad Z said:
You're GPS. You'd just go straight to VAAMP
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I'm a little disappointed there isn't another intersection in the sequence labeled PYRRE. Then VANNN, then HLSNG.
 
Think about a guy with some pointy teeth and the guy who went after him with a pointy stick.

Or if you are somewhat of the celluloid persuasion, Bella Lugosi and Hugh Jackman.
 
dtuuri said:
Yes, par 1510 in TERPs (link in fourth column, row four: http://www.avclicks.com/lessons.html) limits en route turns between segments to 120°. Those two airways would exceed that in order to connect to the feeder.

dtuuri
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It's now 90 degrees for all revised RNAV IAPs, even from a Victor airway. It is still 120 degrees for ground based IAPs.
 
aterpster said:
It's now 90 degrees for all revised RNAV IAPs, even from a Victor airway. It is still 120 degrees for ground based IAPs.
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I know it's 90 degrees for joining at the IF, but did they make that a requirement for joining at the IAF on RNAV approaches, too? I'm familiar with quite a few RNAV IAP's where the TAA has three 120-degree pie slices at the IAF, and those are the more recently developed ones rather than the 180/90/90 slices in the earlier TAA IAP's. And just this past Tuesday, Pittsburgh Approach cleared us for about a 150 degree turn at the IAF on the RNAV 8 at KFWQ when we were arriving at AKSAR from the southeast.
 
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AggieMike88 said:
Think about a guy with some pointy teeth and the guy who went after him with a pointy stick.

Or if you are somewhat of the celluloid persuasion, Bella Lugosi and Hugh Jackman.
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Oh, OK. Over my head. Guess I need to watch more movies...
 
aterpster said:
It's now 90 degrees for all revised RNAV IAPs, even from a Victor airway. It is still 120 degrees for ground based IAPs.
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Are you referring to the same thing I was? :confused: The OP's ADM VOR is ground-based, so the restricted airways inbound and feeder outbound are too.

dtuuri
 
Ardmore has a downtown? What's there a Dairy Queen and a 711?
 
Ron Levy said:
I know it's 90 degrees for joining at the IF, but did they make that a requirement for joining at the IAF on RNAV approaches, too? I'm familiar with quite a few RNAV IAP's where the TAA has three 120-degree pie slices at the IAF, and those are the more recently developed ones rather than the 180/90/90 slices in the earlier TAA IAP's. And just this past Tuesday, Pittsburgh Approach cleared us for about a 150 degree turn at the IAF on the RNAV 8 at KFWQ when we were arriving at AKSAR from the southeast.
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I can't speak to what ATC does. They are in their own world. They are limited to 90 degrees per their handbook, but you know how that goes.

Those TAAs that you view as 120 are actually 60 degrees. I know, they are crazy if you are coming from the worst direction.

That aside, 8260.58 plus a memo that AFS-420 dug up now limits all transition course changes to 90 degrees (or less if leg length restricts it to less than 90 degrees per complex calculations in Volume 6 of 8260.58.)

One of the first we dealt with is the turn on at JOXIT at KDLN RNAV 17. Check the math for V-343.
 
dtuuri said:
Are you referring to the same thing I was? :confused: The OP's ADM VOR is ground-based, so the restricted airways inbound and feeder outbound are too.

dtuuri
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Doesn't matter. If the VOR is the feeder fix or IAF for an RNAV approach, it is now 90 degrees. The OP's example predates this.
 
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AggieMike88 said:
I'm a little disappointed there isn't another intersection in the sequence labeled PYRRE...
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If there is an intersection named PYRRE anywhere, then the next ones had better be named JAUNT and FOYLE.

10 Internets awarded to the first one who makes knows why :lol:
 
dtuuri said:
So the change was based on a decade of history, according to the rep from AFS 470 and he's "hesitant" about changing it back? I see another inevitable turf war that'll take years to resolve. <yawn> :yawn:

dtuuri
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I'm not a member of his fan club.
 
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