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-   -   LHR 09L Displaced Threshold (https://www.pprune.org/tech-log/359144-lhr-09l-displaced-threshold.html)

Sawbones 23rd January 2009 03:55
LHR 09L Displaced Threshold
 
Any comments please as to why LHR 09L touchdown is displaced by approximately 1,000 feet?

Curious. Thanks.

Sir George Cayley 23rd January 2009 16:34
Windsor Castle?

Just a guess though heaven knows why the monarchy built it so close to LHR.

Sir George (I've met her y'know) Cayley

Musket90 23rd January 2009 18:12
Presumably obstacles on the approach like castles, roads etc. 09R is also displaced, but it's slightly further from castle, so probably roads etc.

NigelOnDraft 23rd January 2009 20:34
Nearest road best guess IMHO ;)

NoD

Sir George Cayley 24th January 2009 15:07
The correct and more serious answer can be found in CAP168 Licensing of Aerodromes. Chapter 3 gives you the physical requirements and Chapter 4 the Treatment of Obstacles. The acronym APPS is relevant in this case.

Sir George Cayley


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