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Search: Posts Made By: jientho
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Forum: Spectators Balcony (Spotters Corner)
20th Jun 2016, 19:15
Replies: 70
Views: 25,611
Posted By jientho

Looks like pure sensationalism based on winks and...

Looks like pure sensationalism based on winks and nods to me. Overworked controller doesn't give a timely warning, or speaks so fast that the warning isn't heard/understood. Pilot, whose ass is after...
Forum: Rumours & News
2nd Apr 2015, 10:43
Replies: 3,543
Views: 5,638,615
Posted By jientho

@BOING Of course the assumption on...

@BOING



Of course the assumption on which that logic was totally based, now shown to be incorrect, is that "hijackers" always start out outside the door. Obvious in retrospect (and not...
Forum: Rumours & News
29th Jan 2015, 11:34
Replies: 3,923
Views: 4,489,957
Posted By jientho

g force

NAROBS, you are confusing speed with acceleration. 55 m/s is speed. You seem to be assuming 55 m/s/s (=~5.5g). That would only be the case if the change in vertical speed all occurred in one second.
Forum: Rumours & News
28th Jan 2015, 13:35
Replies: 3,923
Views: 4,489,957
Posted By jientho

FBW, trim

Just to be absolutely clear, with FBW you can never fly it completely "like" a non-FBW aircraft. There is simply no physical linkage there to fall back to. There is only a wire (wiring)...
Forum: Rumours & News
8th Jan 2015, 19:29
Replies: 3,923
Views: 4,489,957
Posted By jientho

@dash34 re: Propduffer -- I agree too cheeky in...

@dash34 re: Propduffer -- I agree too cheeky in this tragedy, but I think he was (very clumsily) trying to make a different point about possible dangers of an artificially strict adherence to...
Forum: Rumours & News
2nd Jan 2015, 12:29
Replies: 3,923
Views: 4,489,957
Posted By jientho

@Nemrytter -- Thanks! It seems that even my...

@Nemrytter -- Thanks! It seems that even my imagination regarding tropical extremes, which was so far "out there" that a comment got mod-deleted (in fairness maybe because I referenced global warming...
Forum: Rumours & News
2nd Jan 2015, 03:32
Replies: 3,923
Views: 4,489,957
Posted By jientho

@HarryMann -- Do the math. Downdraft of 250+...

@HarryMann -- Do the math. Downdraft of 250+ mph?? I mean I'm the one speculating about unprecedented tropical weather phenomena, but that is beyond even my ability to conjecture.
Forum: Rumours & News
1st Jan 2015, 15:58
Replies: 3,923
Views: 4,489,957
Posted By jientho

Up Gust

@Bloggs --



?? A severe enough updraft will cause pitchup simply from differential vertical wind speeds between wings/nose and tail.

(But excellent points on "forgetting to remember trim"...
Forum: Rumours & News
1st Jan 2015, 13:17
Replies: 3,923
Views: 4,489,957
Posted By jientho

Updraft

@Bloggs re: updraft. I think the scenario being considered is that the updraft was so severe that it stalled them immediately, and also caused enough additional pitch-up (they were already in a...
Forum: Rumours & News
31st Dec 2014, 18:34
Replies: 3,923
Views: 4,489,957
Posted By jientho

I can't help thinking that if global warming is...

I can't help thinking that if global warming is happening, then the place where climate/weather dragons (never before seen (unexpected) phenomena) will first show is at the already-hottest places on...
Forum: Rumours & News
31st Dec 2014, 15:49
Replies: 3,923
Views: 4,489,957
Posted By jientho

@Super -- The concept is sound, but it's never as...

@Super -- The concept is sound, but it's never as simple as it may seem at first. For example, you're going to use a distress frequency practically continuously (verbal reporting of all those figures...
Forum: Rumours & News
31st Dec 2014, 11:47
Replies: 3,923
Views: 4,489,957
Posted By jientho

@highflyer -- We'll have to agree to disagree as...

@highflyer -- We'll have to agree to disagree as to "stable" as a requirement I think. I'm positing a possible last-minute achievement of "shallow" (enough). (And again, lack of a comm attempt is not...
Forum: Rumours & News
31st Dec 2014, 11:32
Replies: 3,923
Views: 4,489,957
Posted By jientho

@Super re: pre-crash broadcasting. Attractive...

@Super re: pre-crash broadcasting. Attractive concept. I would refine it away from CVR audio (creepy, controversial) and even FDR (too much info) though. All you want is continuous (or very...
Forum: Rumours & News
31st Dec 2014, 10:39
Replies: 3,923
Views: 4,489,957
Posted By jientho

@highflyer re: possible "ditching". Ditch vs....

@highflyer re: possible "ditching". Ditch vs. Crash is a false dichotomy. Possible that pilots barely managed a barely-survivable touchdown. Also, lack of attempted comm is not a certainty....
Forum: Rumours & News
31st Dec 2014, 09:31
Replies: 3,923
Views: 4,489,957
Posted By jientho

Really good discussion and points from everyone...

Really good discussion and points from everyone in this recent automation back-and-forth; wanted to say thanks because the respectful and knowledgable disagreements are a great service to all (and a...
Forum: North America
11th Dec 2014, 21:07
Replies: 4
Views: 3,199
Posted By jientho

ATC: Souls on board Captain? PF: Uhh, umm,...

ATC: Souls on board Captain?

PF: Uhh, umm, 112 and a half at the moment.
Forum: North America
10th Dec 2014, 14:45
Replies: 10
Views: 4,996
Posted By jientho

Another probably relevant piece of info, a 5.5 yo...

Another probably relevant piece of info, a 5.5 yo AD for this a/c related to flaps, icing, stick pusher, and false alarms.

Embraer to retrofit Phenom flap software from April - 3/11/2009 - Flight...
Forum: North America
10th Dec 2014, 11:34
Replies: 10
Views: 4,996
Posted By jientho

Another stick/yoke pull?

It looks pretty clear from the data and the eyewitness account at the link above that this is sadly another yoke/stick-pull stall. Throttle-up and engines responding normally doesn't compensate for...
Forum: Rumours & News
3rd Apr 2014, 20:17
Replies: 1,147
Views: 488,055
Posted By jientho

The Asiana Investigation document (Document 19...

The Asiana Investigation document (Document 19 Other Pertinent Forms and Reports - 6120.1 Filing Date September 16, 2013 11 page(s) of Image (PDF or TIFF) 0 Photos...
Forum: Rumours & News
13th Jul 2013, 01:22
Replies: 2,403
Views: 2,205,526
Posted By jientho

jientho wrote: Quote: ...

jientho wrote:
Quote:
Now, you seem to agree that there is NO condition where it makes any sense, so WHY IS IT ALLOWED BY THE SYSTEM to be entered if...
Forum: Rumours & News
12th Jul 2013, 19:13
Replies: 2,403
Views: 2,205,526
Posted By jientho

Again, this is never something you just assume in...

Again, this is never something you just assume in life-critical system designs. In fact, you assume the opposite and then look for any possible valid use of said configuration in light of its...
Forum: Rumours & News
12th Jul 2013, 16:21
Replies: 2,403
Views: 2,205,526
Posted By jientho

jientho 12th Jul 2013, 13:49: Quote: ...

jientho 12th Jul 2013, 13:49:
Quote:
This seems to be a classic case of lack of real-world awareness in software design. What POSSIBLE real-world condition would justify allowing...
Forum: Rumours & News
11th Jul 2013, 12:27
Replies: 2,403
Views: 2,205,526
Posted By jientho

Bloggs, I gotta object to this mindset: "Fly...

Bloggs, I gotta object to this mindset:

"Fly it like the autopilot flies an ILS. You get low on slope, you pull the nose up. Primary effect of controls. If you then get slow or know form...
Showing results 1 to 23 of 23


 
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