Talk:Simultaneous approach

Did you know nomination

The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. You can locate your hook here. No further edits should be made to this page.

The result was: promoted by Darth Stabro (talk) 21:15, 23 December 2025 (UTC)

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Airplanes landing simultaneously

• ... that one type of simultaneous approach procedures (example pictured) allow aircraft to land on runways as close as 750 ft (230 m) in bad weather?

• Source:

• • Reviewed:

Created by 痛 (talk). Number of QPQs required: 0. Nominator has fewer than 5 past nominations.

痛 (talk) 06:52, 30 November 2025 (UTC).

• @痛: Very interesting. Nice work on the diagrams by the way; they look really good. I wasn't able to verify the hook with the source you've given me, but have been with these sources:. I'm unable to find the part though that says that it's allowed in bad weather. Could you direct me to where the source and article says this? Also I wonder if the hook is slightly misleading because if I'm not mistaken, only one type can allow for the aeroplanes to get as close as 750 feet but other types can't, so maybe the hook should say something like "one type of simultaneous approach"? Also maybe the hook should use the convert template to include metres? The image is freely licensed. When looking at Earwig's copyright violation tool, there are a few sentences such as "simultaneous approaches to runways spaced less than 3,000 feet, but at least 750 feet apart. The SOIA procedure utilizes a straight-in" that are very possible to the sources. Could you reword them please? ―Panamitsu (talk) 04:31, 1 December 2025 (UTC)
  • @Panamitsu: Thank you so much for the feedback! This is my first DYK ever, and your comments are very encouraging.

Re: hook "bad weather": I wasn't sure how strict the hook has to be. I used the term "bad weather", as I think it makes more sense to readers outside the industry, but feel free to recommend something more appropriate. so strictly speaking, bad weather (technically called instrument meteorological conditions; standards varies by country but generally means low cloud base and poor visibility) requires pilots to fly under instrument flight rules. During the descend / approach phase of the flight, the part of procedures being used in instrument flight rules are called "instrument approach procedures". Simultaneous approaches are a kind of instrument approach procedure. When runways are built close to each other, the airport must use simultaneous approach procedures in bad weather, or one of the runways must be closed.

Re: hook source: Yes, you are correct. The source is indeed specifying one kind of simultaneous approaches — simultaneous dependent approach to CSPR, and San Francisco International Airport, airport code "SFO", is listed in Appendix A, with runway centerlines officially measured to be 750 feet apart and authorized to conduct simultaneous dependent approach to CSPR.

Re: copyvio: A lot of other websites copy-pasted from Federal Aviation Administration's Aeronautical Information Manual or FAA Order 7110.65, which are U.S. federal government work and are in public domain. I have gone through all the red highlights and can confirm that there should be no copyvio concerns. --痛 (talk) 22:07, 1 December 2025 (UTC)

痛 Oh I see. Please bear with me for a second because I don't understand this topic very well. Everything has been cleared up now except for the weather conditions thing, which I'm still confused about. Is there a source that directly says that this distance between the aeroplanes can be used in bad weather? If not, I would still approve the hook if the "bad weather" was removed. That would make it much simpler. ―Panamitsu (talk) 23:04, 1 December 2025 (UTC)

• @Panamitsu: Will this source work? "In fall 2013, the FAA... during poor weather conditions" --痛 (talk) 01:00, 2 December 2025 (UTC)

• 痛 Sorry but it doesn't say it directly, because it says that the aircraft are separated by 1.5 nautical miles, not 750 feet. I'm happy to approve the hook without the weather part though. ―Panamitsu (talk) 02:18, 2 December 2025 (UTC)

• @Panamitsu: I understand the concern. I am hesitant to do the hook without "in bad weather" part, because in good weather aircraft can land pretty close to each other. I don't have a reliable source for this, but in certain events they can land within 500 ft of each other laterally. The source I used is essentially saying that SFO then had runways 750 feet, thus aircraft cannot use both runways, but with this new type of procedure, they can land on both runways even in bad weathers. Maybe this source stated the logic more clearly? --痛 (talk) 03:12, 2 December 2025 (UTC)

• Oh I see. And yes that source does seem to be better. I'll approve. Thanks. ―Panamitsu (talk) 03:38, 2 December 2025 (UTC)