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"The UK, and London Heathrow Airport in particular, are the world's leaders in Continuous Descent Approach."

What does this even mean??? 90.192.7.48 (talk) 14:33, 7 April 2008 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2008-04-07T14:33:00.000Z","author":"90.192.7.48","type":"comment","level":1,"id":"c-90.192.7.48-2008-04-07T14:33:00.000Z","replies":[]}}-->

This is one of the worst wiki pages I have seen in awhile. I just read a news wire story on CDA that was infinitely more informative and easy to read than this entry. It really should be deleted unless someone cleans it up. Jatkins679 (talk) 17:35, 18 June 2008 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2008-06-18T17:35:00.000Z","author":"Jatkins679","type":"comment","level":1,"id":"c-Jatkins679-2008-06-18T17:35:00.000Z","replies":[]}}-->

Starts off OK ("Continuous Descent Approach is a method by which aircraft approach airports prior to landing, and is designed to reduce fuel burn and noise compared with a conventional approach. It involves maintaining a constant 3 degree angle during descent, until meeting the Instrument Landing System"), but the rest of it is full of unexplained jargon, and is virtually incomprehensible to people who don't already know what CDA is. —Preceding unsigned comment added by 82.13.26.148 (talk) 21:20, 29 December 2008 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2008-12-29T21:20:00.000Z","author":"82.13.26.148","type":"comment","level":1,"id":"c-82.13.26.148-2008-12-29T21:20:00.000Z","replies":["c-D10655063-2009-01-25T15:16:00.000Z-82.13.26.148-2008-12-29T21:20:00.000Z"]}}-->

I agree with the poster above. The article has only one source of information, that being a report from the airport of Heathrow. Very dubious considering the article claims this airport is a world leader in CDA's.
This brings up some questions. First of all, I'm not certain the airport has the final say in the design of arrival and approach procedures. From what I understood, this is up to the CAA. I will research the matter and post my findings here later.D10655063 (talk) 15:16, 25 January 2009 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2009-01-25T15:16:00.000Z","author":"D10655063","type":"comment","level":3,"id":"c-D10655063-2009-01-25T15:16:00.000Z-82.13.26.148-2008-12-29T21:20:00.000Z","replies":[]}}-->

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The current page makes it look like CDA is used only in UK and US. But e.g. Amsterdam Schiphol airport (AMS) is using CDA since 2007 (source: the Dutch version of this same page). Rustamabd (talk) 14:42, 28 August 2017 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2017-08-28T14:42:00.000Z","author":"Rustamabd","type":"comment","level":1,"id":"c-Rustamabd-2017-08-28T14:42:00.000Z","replies":[]}}-->

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Sources

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This page needs a cleanup. Here's some sources for whoever wants to work on this:

[1] (in particular sourcing that claim about naming: "The FAA decided to rebrand CDA due to the safety and noise risks discovered oversease and in litigation so they changed the name of the procedure from “Continuous Descent Approach” to “Optimized Profile Descent” (OPD).")
[2]
[3]
[4]
[5]
[6]

These sources are rich in content. Hope this helps. ∫ A Y ^™ 12:01, 3 June 2016 (UTC)[reply]__DTELLIPSISBUTTON__{"threadItem":{"timestamp":"2016-06-03T12:01:00.000Z","author":"Daylon124","type":"comment","level":1,"id":"c-Daylon124-2016-06-03T12:01:00.000Z-Sources","replies":[],"displayName":"\u222b A Y"}}-->