Change Forum... Civil Aviation Travel, Polls & Prefs Tech/Ops Aviation Hobby Aviation Photography Photography Feedback Trip Reports Military Av & Space Non-Aviation Site Related LIVE Chat My Starred Topics | Profile | New Topic | Forum Index | Help | Search
 kparke777 From United States of America, joined Apr 2007, 55 posts, RR: 0Posted Mon May 3 2010 00:11:17 UTC (5 years 7 months 10 hours ago) and read 5396 times:

 At LAX, why are the 24's N of the 25's? I thought that 25 should be N of 24 but at LAX the opposite is true with 24 being N of 25. At PHX, our home, 26 is N of 25 which aligns with the headings.
 swiftski From Australia, joined Dec 2006, 2701 posts, RR: 2 Reply 1, posted Mon May 3 2010 00:57:17 UTC (5 years 7 months 9 hours ago) and read 5372 times:

 All the 24' and 25' runways have the same heading (249). You can have 25L, 25C, 25R but you can't have four, i.e. 25L, 25LC, 25RC, 25R. This is why they are given another runway number. At PHX they are all 257, so same applies. In both cases it doesn't really matter which is more North as the numbering will be innacurate for one pair.
 ANITIX87 From United States of America, joined Mar 2005, 3332 posts, RR: 12 Reply 2, posted Mon May 3 2010 08:31:59 UTC (5 years 7 months 2 hours ago) and read 5246 times:

 Quoting kparke777 (Thread starter):At LAX, why are the 24's N of the 25's? I thought that 25 should be N of 24 but at LAX the opposite is true with 24 being N of 25. At PHX, our home, 26 is N of 25 which aligns with the headings.

Why are the 24s and 25s the primary runways? Because they're used more often? I think it makes perfect sense, because 06L/R is north of 07L/R, and those are "closer" to North.

TIS

 www.stellaryear.com: Canon EOS 50D, Canon EOS 5DMkII, Sigma 50mm 1.4, Canon 24-70 2.8L II, Canon 100mm 2.8L, Canon 100-4
 vikkyvik From United States of America, joined Jul 2003, 11659 posts, RR: 25 Reply 3, posted Mon May 3 2010 08:48:10 UTC (5 years 7 months 1 hour ago) and read 5244 times:

 Quoting swiftski (Reply 1):You can have 25L, 25C, 25R but you can't have four, i.e. 25L, 25LC, 25RC, 25R. This is why they are given another runway number. At PHX they are all 257, so same applies.

It always sort of puzzled me why PHX didn't give their runways L/C/R designations, given that they only have 3 runways. I just figured they wanted to avoid confusion as to which side (north or south) an airplane was using. That or they had plans to build a 4th which never got done.

 Quoting swiftski (Reply 1):All the 24' and 25' runways have the same heading (249).

I believe that the 25s were also built well before the 24s. So when they added the two northern runways, they gave them the next closest designation.

 I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 MrSkyGuy From United States of America, joined Aug 2008, 1214 posts, RR: 3 Reply 4, posted Mon May 3 2010 10:36:51 UTC (5 years 7 months ago) and read 5187 times:

 I also think there's a rule of thumb depending on where the terminal is located. At Midway for example, the terminal doesn't "split" the runways.. it's to the right completely, giving room for "C" designators on the middle runway. LAX on the other hand splits the runways neatly with 2 on each side. General flow is typically landing traffic on the outboard runways, departing on the inboards.
 "The strength of the turbulence is directly proportional to the temperature of your coffee." -- Gunter's 2nd Law of Air
 Viscount724 From Switzerland, joined Oct 2006, 28152 posts, RR: 22 Reply 5, posted Tue May 4 2010 15:25:35 UTC (5 years 6 months 4 weeks 19 hours ago) and read 4889 times:

 When the 3rd parallel runway opened at MIA in 2003 (the one at far left in diagram below, now 8L/26R) it was numbered 8/26. http://204.108.4.16/d-tpp/1004/00257AD.PDF The other two were 9L/27R and 9R/27L. Apparently there was confusion that sometimes resulted in aircraft mis-identifying the runways and thinking the new runway was 9L/27R. About a year later they renumbered the new runway to become 8L/26R. Runway 9L/27R was changed to 8R/26L, and 9R/27L was changed to 9/27. I guess they considered it less confusing to have the 2 runways close together to have the same numbers and L/R designations,and the more distant runway to have the unique numbers.
 StarAC17 From Canada, joined Aug 2003, 3667 posts, RR: 10 Reply 6, posted Tue May 4 2010 16:07:13 UTC (5 years 6 months 4 weeks 18 hours ago) and read 4868 times:

 Quoting vikkyvik (Reply 3):It always sort of puzzled me why PHX didn't give their runways L/C/R designations, given that they only have 3 runways. I just figured they wanted to avoid confusion as to which side (north or south) an airplane was using. That or they had plans to build a 4th which never got done.

YYZ has 3 parallel runways as well and doesn't use a "C" designation either and I would think for the same reason as 24L/R and 6L/R are southern runways and has 5/23 on the north side.

A center runway has to be a true central runway where they are spaced reasonably evenly.

 Engineers Rule The World!!!!!
 vikkyvik From United States of America, joined Jul 2003, 11659 posts, RR: 25 Reply 7, posted Wed May 5 2010 01:21:26 UTC (5 years 6 months 4 weeks 9 hours ago) and read 4765 times:

 Quoting StarAC17 (Reply 6):A center runway has to be a true central runway where they are spaced reasonably evenly.

Well, it doesn't have to be, far as I know. I'm sure it's significantly more prudent to do it that way, though.

DFW has 17-35L/C/R I believe, with two of them fairly close, and one a significantly farther distance away. Of course, they all are on the same side of the terminal. They're the parallels on the left side of the photo:

View Large View Medium

 I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 StarAC17 From Canada, joined Aug 2003, 3667 posts, RR: 10 Reply 8, posted Fri May 7 2010 18:10:18 UTC (5 years 6 months 3 weeks 4 days 16 hours ago) and read 4602 times:

 Quoting vikkyvik (Reply 7):DFW has 17-35L/C/R I believe, with two of them fairly close, and one a significantly farther distance away. Of course, they all are on the same side of the terminal. They're the parallels on the left side of the photo:

Fair enough but it has the same idea as airports like LAX and YYZ + many more as those ones have one heading for one side of the terminal and one for the other side.

I presume the ones on the right are 18-36L/R

Also ATL is laid out similar to DFW and has 9-27L/R and 10/28 on the same side and IMO I think it would make sense to have a 9-27C in there instead.

 Engineers Rule The World!!!!!
 vikkyvik From United States of America, joined Jul 2003, 11659 posts, RR: 25 Reply 9, posted Sat May 8 2010 02:13:25 UTC (5 years 6 months 3 weeks 4 days 8 hours ago) and read 4540 times:

 Quoting StarAC17 (Reply 8):Fair enough but it has the same idea as airports like LAX and YYZ + many more as those ones have one heading for one side of the terminal and one for the other side.

Yeah that's certainly true.

 Quoting StarAC17 (Reply 8):I presume the ones on the right are 18-36L/R

Yup!

 Quoting StarAC17 (Reply 8):Also ATL is laid out similar to DFW and has 9-27L/R and 10/28 on the same side and IMO I think it would make sense to have a 9-27C in there instead.

I almost mentioned ATL in my previous post. That one has always confused me - they have 3 different runway designations for 5 parallel runways (8-26L/R, 9-27L/R, and 10-28). But I assume it was another confusion-elimination strategy.

 I'm watching Jeopardy. The category is worst Madonna songs. "This one from 1987 is terrible".
 Top Of Page Change Forum... Civil Aviation Travel, Polls & Prefs Tech/Ops Aviation Hobby Aviation Photography Photography Feedback Trip Reports Military Av & Space Non-Aviation Site Related LIVE Chat Forum Index

• 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.
• DETAILED RULES

 Similar topics: More similar topics...
NWA Operations At LAX posted Wed Sep 2 2009 18:50:27 by HeyWhaTheHay
Runway Problems At Bristol Airport, Report In. posted Fri Jan 9 2009 06:08:51 by Readytotaxi
Can QF Base A Plane At LAX For SYD-LAX-JFK? posted Tue Dec 30 2008 19:57:54 by Kaitak744
Qantas Gates At LAX posted Wed Sep 3 2008 11:07:41 by Richiemo
Location Of Transmitter At LAX posted Fri May 30 2008 16:56:05 by HeyWhaTheHay
QF Departure At LAX posted Mon May 5 2008 08:36:06 by ArcrftLvr
Runway 28 At Dublin Airport posted Mon Apr 28 2008 08:27:53 by Cc2314
AC Spare Aircraft At LAX? posted Fri Mar 7 2008 17:16:17 by Bicoastal
Why Are There Always So Many QF744s Parked At LAX? posted Tue Feb 12 2008 04:12:23 by SKAirbus
Runway Heading Info Please? posted Mon Mar 12 2007 13:43:47 by Digby