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Post by John Jones on Oct 5, 2020 12:20:24 GMT 1
Can anyone tell the date runway 28 changed to 27. I read Heathrow changed in 1970 but i cannot find anything on Liverpool.
Cheers John J
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Post by viscount on Oct 5, 2020 14:38:24 GMT 1
When Graham Ward as editor of FoLA's 09/27 came to mention the change of runway heading from 10/28 to 09/27, to his surprise he could not find that information. On his behalf I looked through MAS Flypast magazines, and also failed to come up with a date. Appears to have been a classic case of everyone local knew, so why write it down in the magazine! Tied the date down to somewhere 1972-1975. Graham contacted the CAA Library, and together with a helpful librarian/researcher found that notice of the runway heading change was distributed as a NOTAM on Friday 2nd February 1973. We have since adopted that date, overnight 2nd/3rd February 1973 as fact - but certainly we have yet to confirm that from an independent source. To me overnight Saturday into Sunday would be logical, like the changing of clocks, There is no connection between one airport changing a runway heading and another. The need to change is due to the continual slow drift of magnetic north within the earth's crust. The rate and direction of change does vary over long periods of time. The designation '09/27' is based on abbreviating the magnetic headings of the runway, rounding up or down. Currently (well 2017) the full magnetic headings of the Liverpool Runway appear to be (from a quick look on the Internet) 087 and 273 degrees and the difference between Magnetic and True north is now 4 degrees West. 10/28 to 09/27 is not the only runway heading change at Liverpool. There has been another, although less significant change since. Runway 17/35 (this being the north airfield runway that ran from Bryant & May towards Speke Hall) was changed on 11th November 1982 to 16/34, even though by that time landings were not permitted and departures at night only in one direction only and the runway shut down altogether a year later. Further reading: derbosoft.proboards.com/thread/16388/dates-directors-ceos-rwys-airlines |
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Post by John Jones on Oct 5, 2020 14:47:32 GMT 1
When Graham Ward as editor of FoLA's 09/27 came to research the change of runway heading from 10/28 to 09/27 he could not find the information. On his behalf I looked through MAS Flypast magazines, and failed to come up with a date. Appears to have been a classic case of everyone local knew, so why write it down in the magazine! Tied the date down to somewhere 1972-1975. Graham contacted the CAA Library, and together with a helpful librarian/researcher found that notice of the runway heading change was distributed as a NOTAM on Friday 2nd February 1974. We have since adopted that date, overnight 2nd /3rd February 1973 as fact - but certainly I have yet to confirm that from an independent source. Thanks for the above info.if anybody knew the the answer it would be Brian Jones. Thanks Brian. |
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Post by John Jones on Oct 5, 2020 15:17:38 GMT 1
Nothing to do with Liverpool but just found out that Luton changed their runway in May this year to 25/07.
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Post by acklington on Oct 5, 2020 17:57:29 GMT 1
The Isle of Man runway headings changed circa 1990, but 'magnetic drift' is not a one-way process, it will eventually reverse direction and drift back again. Assuming it doesn't 'flip' completely and north becomes south and vice versa. Some sources say the the present day magnetic field is showing signs of instability, so could be about to flip.
That'll be fun.
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