Jump to content

Sign in to follow this  
Guest tomahawk_pa38

London Heathrow R/W 28R and 28L

Recommended Posts

Guest tomahawk_pa38

I'm old enough to remember when the runways were 28L and 28R but can't remember when they changed to 27L and 27R (presumably because of mag var and I presume they are designated to the nearest whole degree). Here's my questions:-1. Who can remember when they changed please ? - think it must have been about 1980.2. By how much does the magnetic variation have to change in order to trigger the need to change the designation.3. Do many airports in the world have to make this change or does it only affect those nearer the poles.4. Will Heathrow ever change back again - if so - how long / when will this be.

Share this post


Link to post

Hi Dave,

I'm old enough to remember when the runways were 28L and 28Rbut can't remember when they changed to 27L and 27R (presumably because of mag var and I presume they are designated to the nearest whole degree). Here's my questions:-
I'm away on a business trip right now but back on Saturday 7th so I'll try to have the answers for you shortly.cheers,Lee

Lee James
Senior Captain
Events Manager

British Airways Virtual
Pilot of SPEEDBIRD 9 DELTA VICTOR (BAW9DV)

Share this post


Link to post
Guest tomahawk_pa38

Lee,thanks - thought it was roundabout then, any thoughts on my other questions.

Share this post


Link to post

"2. By how much does the magnetic variation have to change in order to trigger the need to change the designation."In theory, the numbers should reflect the nearest 10 degree increment.E.g. runway 28 headings could be 275(rounded up, I believe), 276, 277, 278, 279, 280, 281, 281, 283 and 284.However, some airports don't even bother changing the designation. For example, runway 07/25 at YSSY has a magnetic heading of 062/242. No doubt $$$'s influence the decision to change the designation."3. Do many airports in the world have to make this change or does it only affect those nearer the poles."Magnetic variation is not necessarily greatest nearest the poles. If you can find a pic of the world showing variation contours, you will see this to be the case."4. Will Heathrow ever change back again - if so - how long / when will this be."Changes can take thousands of years in some cases. Scientists say that the poles could completely flip (North could become south and south could become north).Hope this helps.Cheers.Q>

Share this post


Link to post
Guest tomahawk_pa38

Very good thanks !

Share this post


Link to post

>>>However, some airports don't even bother changing the designation. For example, runway 07/25 at YSSY has a magnetic heading of 062/242. No doubt $$$'s influence the decision to change the designation.:(


Mark Adeane - NZWN
Boeing777_Banner_BetaTeam.jpg

Share this post


Link to post

I started flying in 1963, and since then quite a few runway designations changed. The rate of change of magnetic variation is published on aeronautical charts. As example the current rate in Israel is 3 minutes east per annum, so the old runways 02 in Eilat and Tel Aviv Sde Dov Municipal are now 03's.


Regards, Opher Ben Peretz

KLMMD-11.jpg

Share this post


Link to post
Guest fsfreak2004

>2nd July 1987 was the date in question.2nd july 87 --> 2/7/ 87 runway 2 7HAHA!Alex

Share this post


Link to post

You didn't happen to be flying an A320 where you?;)


Eric Fisher  

 

 

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    2%
    $540.00 of $25,000.00 Donate Now
×
×
  • Create New...