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Search: Posts Made By: infrequentflyer789
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Forum: Tech Log
5th Jul 2011, 22:19
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Whilst appreciating and agreeing with practically...

Whilst appreciating and agreeing with practically all of your well written posts, I might just have to call you on that one.

The A320 crash at Bilbao I think does meet that criteria (Accident of...
Forum: Tech Log
2nd Jul 2011, 23:47
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

BEA says "to the left and nose-up stops". For...

BEA says "to the left and nose-up stops". For 30s. Is that not "hard back" ?
Forum: Tech Log
2nd Jul 2011, 23:42
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Possibly confusion between AOA protections and...

Possibly confusion between AOA protections and low/high speed protections.

As I understand it, the latter may come back if the speeds come back, but they are not AOA based, and they are...
Forum: Tech Log
2nd Jul 2011, 23:20
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

I also know exactly what would happen, merely...

I also know exactly what would happen, merely from the perspective of knowing a bit about how stuff that flys (and control systems) is designed and built. I have no answer as to "why" though.


...
Forum: Tech Log
2nd Jul 2011, 22:53
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Wrong. Look at the timeline A33Zab (I think)...

Wrong. Look at the timeline A33Zab (I think) posted a while back (post 379 - found it) - the elevators alone took them up to 15+deg pitch and right into stall, the trim followed later (as it is...
Forum: Tech Log
2nd Jul 2011, 21:59
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Nothing. There is no AOA protection outside of...

Nothing. There is no AOA protection outside of normal law.

PFD and speed scale changes to indicate this.

There is a stall warning based on AOA (if the plane thinks it has a valid AOA), but...
Forum: Tech Log
29th Jun 2011, 13:09
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

What other a/c does it any other way ? The...

What other a/c does it any other way ?

The 777 has exactly the same number of identical pitots, also feeding an airdata and FBW system that can go wrong in exactly the same way (pitch-up in cruise...
Forum: Tech Log
29th Jun 2011, 00:13
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Inherently false. Question should be does...

Inherently false.

Question should be does the increased sophistication result is a system that is less prone to failure, or more prone to failure.



The overall "system" is aircraft + pilots....
Forum: Tech Log
28th Jun 2011, 23:44
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

@BOAC: Well, inadvertent pitch up is always...

@BOAC:

Well, inadvertent pitch up is always going to give you a climb you don't want/need by definition - and it only "ensures you stay" until you tell it to stop.

For every safety measure you...
Forum: Tech Log
28th Jun 2011, 17:35
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

I don't think anyone is suggesting that. ...

I don't think anyone is suggesting that.

Transient overspeed in turbulence prompted the crew to close the throttles.

As speed reduced, turbulence then caused transient increase of alpha to...
Forum: Tech Log
26th Jun 2011, 11:21
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Very nice timeline, hope we get that level of...

Very nice timeline, hope we get that level of presentation in the BEA reports (though just fdr traces would be ok).

Haven't gong through it all, but it looks right per the information we have to...
Forum: Tech Log
25th Jun 2011, 22:55
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

There is no indication so far the the 447 zoom...

There is no indication so far the the 447 zoom climb was induced by the FCS, while there is knowledge of PF nose-up input prior to the climb. If invoking Occam, why would you add an FCS law change...
Forum: Tech Log
19th Jun 2011, 21:22
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

I was assuming that the nose-down inputs didn't...

I was assuming that the nose-down inputs didn't completely stop the climb, therefore the a/c is still trading speed for height (albeit at a slower rate) and thus increasing AoA.



Was going by...
Forum: Tech Log
19th Jun 2011, 17:51
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

The BEA text, and the "3D view" graphic, seems to...

The BEA text, and the "3D view" graphic, seems to me to indicate that stall warning was before the second nose-up input and ascent. It is almost as if PF reacts with back stick every time stall...
Forum: Tech Log
19th Jun 2011, 17:16
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Can someone provide reference where Airbus...

Can someone provide reference where Airbus actually said the plane was not at fault ?

All I have / recall is Airbus release (I believe approved by BEA) that no action was required for 330...
Forum: Tech Log
16th Jun 2011, 22:53
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

Sometimes I wonder if we're all reading the same...

Sometimes I wonder if we're all reading the same report...



I doubt THS could get to 13 nose up in normal law without triggering protections. Unless AoA was busted (as at Perpignan) - but...
Forum: Tech Log
16th Jun 2011, 19:08
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

As opposed to the direct admission of designing...

As opposed to the direct admission of designing and building in a full stall warning system ? Did they do that just for fun on their day off, being as it wasn't in-spec ?

Those that designed the...
Forum: Tech Log
16th Jun 2011, 18:58
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

You need to read the english more carefully (and...

You need to read the english more carefully (and that might not be easy for non-natvie speakers, not sure I could read the French exactly right).
BEA haven't helped by releasing this as a...
Forum: Tech Log
15th Jun 2011, 21:48
Replies: 1,069
Views: 281,196
Posted By infrequentflyer789

It might if they had done that, but they haven't,...

It might if they had done that, but they haven't, so it doesn't.

AB released a statement saying that at this point in the investigation no new modifications were advised. That does not preclude...
Showing results 1 to 19 of 19


 
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