Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Another IFR Question  
User currently offlineDw747400 From United States of America, joined Aug 2001, 1265 posts, RR: 1
Posted (7 years 11 months 3 weeks 4 days 5 hours ago) and read 1773 times:

As many of you have figured out, I'm in the final stages of earning my Instrument rating. In preparation for the checkride, I had a couple related questions about V-airways and changeover points. According to the AIM, a COP can either be marked or (obviously) take place at a fix that defines a dog leg. My question is what degree of change in course would be considered a dog leg? I'm looking at V1 down the East Coast and there is a 5 degree change in course at the WALLO intersection. Would this make WALLO a COP despite the fact it is only about a third of the way along the airway? Also, the other radial that defines the fix (CRE 034) has a DME marking at the fix. I assume a DME fix indicates that the radial can be picked up at that distance as well, but wanted to verify this.

Sorry if these questions are a bit strange, but I know tech/ops is the best place to get a fast and accurate answer from people that know!

If a visual helps, the route in question is on L-27, panels B and C.

Thanks.


CFI--Certfied Freakin Idiot
6 replies: All unread, jump to last
 
User currently offlineKELPkid From United States of America, joined Nov 2005, 6428 posts, RR: 3
Reply 1, posted (7 years 11 months 3 weeks 4 days 5 hours ago) and read 1769 times:

I would think any COP where you have to change aircraft heading to stay on the airway is, by definition, a dogleg. Most COP's involve only changing the receiver from one station to the next, and setting the TO bearing in the OBS selector.

As I recall, doglegs are depicted on NOS charts with an "x" at the dogleg point.



Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineDw747400 From United States of America, joined Aug 2001, 1265 posts, RR: 1
Reply 2, posted (7 years 11 months 3 weeks 4 days 5 hours ago) and read 1768 times:

Thanks for the prompt response... I don't believe there are X's for doglegs on NOS charts--I looked and couldn't find any. In the legend you have X's for various mileage breakdown and computer fix purposes, as well as the X-flag for MCAs. Didn't see anything else.


CFI--Certfied Freakin Idiot
User currently offlineKELPkid From United States of America, joined Nov 2005, 6428 posts, RR: 3
Reply 3, posted (7 years 11 months 3 weeks 4 days 5 hours ago) and read 1766 times:

Quoting Dw747400 (Reply 2):
I don't believe there are X's for doglegs on NOS charts--I looked and couldn't find any. In the legend you have X's for various mileage breakdown and computer fix purposes, as well as the X-flag for MCAs. Didn't see anything else

I pulled out my L-1, and I'm looking at the one dogleg I know well, (ATASY) on V165. it is depicted with an "X". I flew this airway on my long IFR cross country  

EDIT: according to the L-1 legend, this X is "Mileage Breakdown or computer nav fix, no ATC functions." I'm noticing other airways with doglegs where the dogleg is marked by an intersection, seems to make sense.

[Edited 2007-01-01 21:33:26]

[Edited 2007-01-01 21:34:10]


Celebrating the birth of KELPkidJR on August 5, 2009 :-)
User currently offlineIlikeyyc From United States of America, joined Dec 2003, 1373 posts, RR: 20
Reply 4, posted (7 years 11 months 3 weeks 4 days 4 hours ago) and read 1734 times:

Quoting Dw747400 (Thread starter):
My question is what degree of change in course would be considered a dog leg?

Think about it...You have to change to the new station and new radial to stay on the airway, so it must be a changeover point, regardless of how acute the angle is.

Quoting KELPkid (Reply 3):
EDIT: according to the L-1 legend, this X is "Mileage Breakdown or computer nav fix, no ATC functions." I'm noticing other airways with doglegs where the dogleg is marked by an intersection, seems to make sense.

Right. And non-standard COPs are marked with a rigid "S" sort of symbol.



Fighting Absurdity with Absurdity!
User currently offline113312 From United States of America, joined Apr 2005, 576 posts, RR: 1
Reply 5, posted (7 years 11 months 3 weeks 4 days 4 hours ago) and read 1730 times:

I recommend that you read, carefully, the introduction and legends for Jepp charts or NACO charts that you're using. Each element on every chart has significance. This forum really isn't the place to conduct ground school.

User currently offlineDw747400 From United States of America, joined Aug 2001, 1265 posts, RR: 1
Reply 6, posted (7 years 11 months 3 weeks 3 days 6 hours ago) and read 1638 times:

Quoting 113312 (Reply 5):
I recommend that you read, carefully, the introduction and legends for Jepp charts or NACO charts that you're using. Each element on every chart has significance. This forum really isn't the place to conduct ground school.

As you suggested, I had already read the appropriate sections of the charts, as well as the AIM and various groundschool course publications but was unable to fine a definitive answer. Your right the forum isn't the place to conduct a groundschool, but I think it is a legitimate place to gain information pertinent to a few specific concerns--though, as with any source, its best to confirm information with other resources.

Quoting Ilikeyyc (Reply 4):
Think about it...You have to change to the new station and new radial to stay on the airway, so it must be a changeover point, regardless of how acute the angle is.

The issue comes to mind because some single-segment airways do not have corresponding radials listed, yet because there is no published information suggesting otherwise, the COP is at the centerpoint.

Thanks.



CFI--Certfied Freakin Idiot
Top Of Page
Forum Index

Reply To This Topic Another IFR Question
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Another Taxi Question posted Tue Jul 17 2001 05:17:32 by Ydna_anderson
Another Anti-skid Question posted Tue Oct 17 2006 03:54:24 by Speedracer1407
Another Question For 1900 Pilots posted Mon Jan 2 2006 21:31:07 by MCPilot
Another Delta Wing Question posted Fri May 13 2005 11:09:49 by Lehpron
Another Most Asked Question! 737 Line posted Tue May 3 2005 06:10:22 by StealthZ
Another 737NG PFD Question. posted Sat Feb 12 2005 16:13:07 by Flying Belgian
Another Reverse Thrust Question posted Fri Dec 17 2004 11:51:58 by Regional757
Yet Another 747 Door Question posted Fri Jul 16 2004 03:16:13 by SafetyDude
IFR Departure Question posted Wed Dec 10 2003 17:59:47 by Airworthy
Another De-icing Question posted Tue Jul 29 2003 03:44:31 by Cancidas

Sponsor Message:
Printer friendly format