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Runways Changing Directions....  
User currently offlineB737-112 From United States of America, joined Nov 1999, 891 posts, RR: 5
Posted (15 years 2 days 9 hours ago) and read 1098 times:

How often does this occur, it happened at my hometown airport BUR. There was Rwy 07/25 and changed later to 08/26. Can someone tell me if this is caused by earthquakes and what other airports have this happened at? I think when BUR was built Rwy 7 was a 074 magnetic and is now 076. Thanks for all help! -Ryan

7 replies: All unread, jump to last
User currently offlineDALMD88 From United States of America, joined Jul 2000, 2801 posts, RR: 14
Reply 1, posted (15 years 2 days 9 hours ago) and read 1069 times:

The magnetic field of the earth is consantly changing. Runway numbers have to be changed every so often to reflect the magnetic change

User currently offlineN202PA From United States of America, joined Jun 2000, 1568 posts, RR: 3
Reply 2, posted (15 years 2 days 8 hours ago) and read 1065 times:

The main runway at Washington National Airport (DCA), 18/36, was recently changed to 1/19 for this very reason.  

User currently offlineGKirk From UK - Scotland, joined Jun 2000, 25324 posts, RR: 55
Reply 3, posted (15 years 2 days 1 hour ago) and read 1030 times:

DALMD88 is correct.

When you hear the noise of the Tartan Army Boys, we'll be coming down the road!
User currently offlineWakeVortix From , joined Dec 1969, posts, RR:
Reply 4, posted (15 years 1 day 21 hours ago) and read 1003 times:

Can you please explain the relationship between a runway number and magnetic field?

Best Regards...

User currently offlineFlyf15 From , joined Dec 1969, posts, RR:
Reply 5, posted (15 years 1 day 20 hours ago) and read 990 times:

In short, the runway number is the magnetic direction of the runway divided by 10, then rounded to the nearest number. For example, if a runway points at 174 degrees magnetic, its number will be 17. The opposite end, being 180 degress off, will be 354, thus 35. The runway is 17/35.

User currently offlineWakeVortix From , joined Dec 1969, posts, RR:
Reply 6, posted (15 years 1 day 7 hours ago) and read 966 times:

Thanks Flyf15, that was helpful.

But what are L and R assigned also to runways with numbers? For example, 27R or 8L.


User currently offlineLBA From United Kingdom, joined Nov 2000, 494 posts, RR: 0
Reply 7, posted (15 years 1 day 4 hours ago) and read 962 times:

The L and R mean left and right. This occurs where airports have parallel runways. So Manchester Airport in the Uk used to have a single 6/24 runway - it now has 6/24L and 6/24R as the new runway is almost complete.

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