Recent submissions

Comment · 2 years ago
Comment · 2 years ago
You can see an example of a parallel landing at SFO (on 28L) after sunset here: https://www.youtube.com/watch?v=LJ1mUkxj0UM. I first spot the strobe of the other aircraft (eventually landing on 28R) at 4:00, and at 7:00 the aircraft are parallel and in close proximity. For comparison, here's one in full darkness: https://www.youtube.com/watch?v=1m2sR3lVotw
Comment · 2 years ago
The issue is the parallel runway, not the traffic in front, which has a much larger separation. What the environment at SFO does not permit is for a pilot to be able to rely on the controller to guarantee separation from the airplane landing in parallel.

The other problem with the Lufthansa is, being a heavy, it needs to be the one staggered slightly behind the other aircraft for wake turbulence reasons.

Comment · 2 years ago
The key dialog happens at 1:18 in the video (https://www.youtube.com/watch?v=7rdapQfJDAM):

> Lufthansa 458 heavy, just for my planning purposes and for the Final controller's planning purposes, can you maintain visual separation with the aircraft at night?

> 458 heavy, exactly that is what is not allowed [laughs]

The controller was trying to give the pilot an out by allowing him to comply with his company's procedures prohibiting visual approaches, but allowing him to make an instrument landing so long as he was capable of looking out his window to ensure that he has specific other aircraft in sight. Note that this is required for parallel landings at SFO because of the very close proximity of the runways otherwise prohibits simultaneous approaches.

The problem is that, under the FAA regulations, all aircraft operating in visual conditions (which includes a clear night) have a duty to maintain vigilance "so as to see and avoid other aircraft" regardless of whether an operation is conducted under instrument flight rules or visual flight rules. 14 C.F.R. § 91.113 (https://www.law.cornell.edu/cfr/text/14/91.113)

In essence, the Lufthansa pilot was telegraphing his refusal to even comply with the basic flight regulations that all aircraft have to comply with (regardless of instrument or visual flight rules).

The combination of (1) refusing to accept a visual approach, and (2) refusing to even abide by the minimum requirements for operation in U.S. airspace (to see and avoid other aircraft), even on an instrument approach, caused the excessive delay.

Comment · 5 years ago
One aspect of aphantasia that I haven't seen mentioned yet is memory of Chinese characters / kanji.

I absolutely cannot for the life of me visualize any* of the characters I can easily read and write. However, there is a trick I can do for the ones I can write: I can trace the strokes in my head in the correct direction, order, and proportion. And I have to do it by imagining the muscle movements I would use. Although I can't visualize the result, it's the closest thing I can get to seeing anything in my mind's eye.

*Almost true; exceptions exist like 十,人,个,大. But something as easy as 车 is too complicated for me to visualize, but very easy to mentally trace.

Comment · 5 years ago
Amazon's air safety record is less than stellar. Prime Air had a fatal 767 incident in early 2019.

https://www.ntsb.gov/investigations/AccidentReports/Pages/AA...

In the accident flight, the first officer (FO) inadvertently activated the "go around" mode during landing, then, in surprise, pushed the airplane into the ground.

> According to one check airman at [FO's previous airline], the FO could explain things well in the briefing room and performed some expected tasks well in the simulator. However, when presented with something unexpected in the simulator, the FO would get extremely flustered and could not respond appropriately to the situation. She said that when the FO did not know what to do, he became extremely anxious and would start pushing a lot of buttons without thinking about what he was pushing, just to be doing something.

Comment · 6 years ago
Look at the "Net demand trend" graph here, and take a look at yesterday: http://www.caiso.com/TodaysOutlook/Pages/default.aspx

Non-renewables (edit: all minus solar and wind), hit their peak at 6pm and stayed there until 8:30pm.

The problem is that solar isn't available during the late evening hours, where, e.g., A/C demand remains high.

Comment · 6 years ago
Comment · 7 years ago
Online certifications are no joke.

https://www.justice.gov/opa/press-release/file/1197256/downl...

> On or about September 25, 2018, in the District of Kansas, the defendant, for the purpose of executing the scheme described above, caused to be transmitted by means of wire communication in interstate commerce an online certification that he (1) read and understood the Kansas Board of Regents policy concerning conflicts of interest, (2) understood that any external personal professional activities in which he engaged that take time away from the University must not interfere with him meeting his faculty teaching and research responsibilities at the University, and (3) agreed to secure approval prior to engaging in any such external activities; all of which was in violation of Title 18, United States Code, Section 1343.

The indictment doesn't say whether the fraud was that (1) he didn't read or understand the conflict of interest policy (presumably not, since that would indicate this wasn't intentional); (2) he didn't understand that external activities must not interfere with his University work (same); so it must be (3) that he agreed to secure approval prior to engaging in any such activities.

So the fraud is that he agreed to secure approval, but didn't follow through.

The indictment also claims:

> Tao certified to KU that he did not labor under any conflict of interest.

But the only certification mentioned in the indictment was that he agreed to secure approval, not that he lacked any conflict of interest.

Regardless, the result of this failure to secure approval for a conflict of interest was a four count indictment for wire fraud and theft by receiving salary, plus a forfeiture request. He allegedly "embezzled, stole, and obtained by fraud" grant money that funded his University salary, by virtue of continuing to receive that salary.

Comment · 7 years ago
Comment · 7 years ago
> Every NTSB report has a "probable cause" section determining who or what was at fault. And then the FAA hands out fines and courts award additional damages largely based on that finding.

In case everyone is not aware, NTSB reports cannot be used in court to establish fault or otherwise be used as evidence when seeking compensation for damages.

"No part of a report of the Board, related to an accident or an investigation of an accident, may be admitted into evidence or used in a civil action for damages resulting from a matter mentioned in the report." 49 USC 1154(b)

Comment · 8 years ago
Comment · 8 years ago
> The Supreme Court has ruled that the 2nd amendment only prohibits the federal government from "infringing" on your right to bear arms, and not the states.

This was true only between 2008 and 2010. In 2010, the Supreme Court clarified that it was incorporated against the states by the 14th Amendment.

Comment · 8 years ago
Comment · 8 years ago

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