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Search: Posts Made By: DaveReidUK
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Forum: Accidents and Close Calls
7th Mar 2023, 08:48
Replies: 488
Views: 124,409
Posted By DaveReidUK

There are upwards of 200 airports worldwide that...

There are upwards of 200 airports worldwide that do slot allocation, a fair number of which are in the USA.
Forum: Accidents and Close Calls
18th Feb 2023, 20:13
Replies: 488
Views: 124,409
Posted By DaveReidUK

Quite so. "The difference between an...

Quite so.

"The difference between an accident and a serious incident lies only in the result". (Annex 13, Chapter 1: Definitions)
Forum: Accidents and Close Calls
17th Feb 2023, 22:19
Replies: 488
Views: 124,409
Posted By DaveReidUK

Fair point. In fact my resolved height AAL should...

Fair point. In fact my resolved height AAL should have been 40' ±12½' (25' being the precision of ADS-B altitude reporting). So, while the 767 likely didn't quite make runway contact, it would...
Forum: Accidents and Close Calls
17th Feb 2023, 19:03
Replies: 488
Views: 124,409
Posted By DaveReidUK

Here's a plot I produced a few days ago, but...

Here's a plot I produced a few days ago, but didn't post at the time because of timing and other issues in the data (which I haven't yet resolved).

It attempts to show the simultaneous positions...
Forum: Accidents and Close Calls
17th Feb 2023, 10:31
Replies: 488
Views: 124,409
Posted By DaveReidUK

Timestamps are normally added by the receiving...

Timestamps are normally added by the receiving software (the actual packets send by the aircraft contain no timing information).

So no question of GPS-based timing - the ADS-B receiver setups I've...
Forum: Accidents and Close Calls
13th Feb 2023, 21:56
Replies: 488
Views: 124,409
Posted By DaveReidUK

I'd say that was a pretty severe limitation on...

I'd say that was a pretty severe limitation on any attempts to determine when the GA was initiated. That, and the implicit (but quite possibly incorrect) assumption that the Aviating and...
Forum: Accidents and Close Calls
12th Feb 2023, 12:20
Replies: 488
Views: 124,409
Posted By DaveReidUK

Why do we need a video at all ? What does it...

Why do we need a video at all ?

What does it contribute to our understanding of the event ?

Does the author have access to any information that isn't already in the public domain ?
Forum: Accidents and Close Calls
11th Feb 2023, 23:15
Replies: 488
Views: 124,409
Posted By DaveReidUK

And, by the same token, all parties were lucky...

And, by the same token, all parties were lucky that SWA only spent 20 seconds stationary, running up, before rolling.
Forum: Accidents and Close Calls
11th Feb 2023, 11:10
Replies: 488
Views: 124,409
Posted By DaveReidUK

On the contrary, it's completely...

On the contrary, it's completely unrepresentative.

Note how the SWA rolls as soon as it enters the runway, for example. That's way different from what happened.
Forum: Accidents and Close Calls
11th Feb 2023, 06:55
Replies: 488
Views: 124,409
Posted By DaveReidUK

Quite cleverly done, if we ignore the fact that...

Quite cleverly done, if we ignore the fact that it features neither a SWA 737-700 nor a 767 of FedEx.

Oh, and the weather ...
Forum: Accidents and Close Calls
9th Feb 2023, 16:59
Replies: 488
Views: 124,409
Posted By DaveReidUK

Do you mean the glideslope antenna ?

Do you mean the glideslope antenna ?
Forum: Accidents and Close Calls
8th Feb 2023, 13:23
Replies: 488
Views: 124,409
Posted By DaveReidUK

Out if interest, is there a verified,...

Out if interest, is there a verified, time-stamped version of the ATC audio that can be overlaid on the vertical profile ?

That said, using either the track or the audio to try to establish...
Forum: Accidents and Close Calls
7th Feb 2023, 17:31
Replies: 488
Views: 124,409
Posted By DaveReidUK

I doubt that anyone who has looked at the traces...

I doubt that anyone who has looked at the traces would think that.

A rather more sobering "what-if" is to consider what the outcome would have been had the 737 paused for as little as 10 seconds...
Forum: Accidents and Close Calls
6th Feb 2023, 17:54
Replies: 488
Views: 124,409
Posted By DaveReidUK

Though, as I'm sure you're aware, he wasn't...

Though, as I'm sure you're aware, he wasn't successful in doing so.
Forum: Accidents and Close Calls
5th Feb 2023, 18:50
Replies: 488
Views: 124,409
Posted By DaveReidUK

FR24 have now released (slightly) more granular...

FR24 have now released (slightly) more granular data which provides more detail around the SWA's runway entry and line up.

The 737 appears to have been stationary for approximately 20 seconds...
Forum: Accidents and Close Calls
5th Feb 2023, 10:29
Replies: 488
Views: 124,409
Posted By DaveReidUK

FR24 data is disappointingly sparse - in...

FR24 data is disappointingly sparse - in particular there's a 27-second gap around the point where the SWA started to roll (not helped by FR24's built-in asynchronicity between position and velocity...
Showing results 1 to 16 of 16


 
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