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Forum: Aviation Safety Discussion Forum Today, 05:07 AM
Replies: 50
Views: 1,264
Posted By Gabriel
There go the 3 seconds that I wasted to write...

There go the 3 seconds that I wasted to write "sensible" immediately before "sequence of events".
Forum: Aviation Safety Discussion Forum Yesterday, 12:57 PM
Replies: 10
Views: 327
Posted By Gabriel
How was the data relayed to you? (honest...

How was the data relayed to you? (honest question).
AFAIK, the problem with all these position tracking systems is not producing the fix itself (and all the derivatives, heading, speed, speed trend,...
Forum: Aviation Safety Discussion Forum Yesterday, 12:50 PM
Replies: 50
Views: 1,264
Posted By Gabriel
How could this have been not intentional? I can't...

How could this have been not intentional? I can't imagine a (sensible) non-intentional sequence of events that leads to what we see in the video.
Forum: Aviation Safety Discussion Forum 10-21-2014, 05:46 PM
Replies: 50
Views: 1,264
Posted By Gabriel
Well, that's not exactly what I thought you were...

Well, that's not exactly what I thought you were going to say.

Of course I respect your answer, not only (nor mostly) because you fly this things for a living (all the pilots that crashed with...
Forum: Aviation Safety Discussion Forum 10-21-2014, 05:04 PM
Replies: 10
Views: 327
Posted By Gabriel
Oh yes they could still happen, just as airplanes...

Oh yes they could still happen, just as airplanes hit each other in the air from time to time even in radar environment.

And ground/taxi radar for airport operation exist. It's not cheap AFAIK,...
Forum: Aviation Safety Discussion Forum 10-16-2014, 02:06 PM
Replies: 11
Views: 485
Posted By Gabriel
Oh, I knew that this semantics of emergency vs...

Oh, I knew that this semantics of emergency vs urgency would come out.
Yes, there are two different definitions, however the FAA treats both equally. They will clear the airspace, ask for intentions...
Forum: Aviation Safety Discussion Forum 10-16-2014, 03:30 AM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Yes, but not without pitot data only. Static was...

Yes, but not without pitot data only. Static was Ok as shown by all three altimeters and VSI showing agreeing (and correct) values.

But if the BEA found that the command bars went up, there must...
Forum: Aviation Safety Discussion Forum 10-16-2014, 03:17 AM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Many (in aviation terms) private pilots are quite...

Many (in aviation terms) private pilots are quite bad at understanding flight mechanics. They can fly very nice and be very precise because they have a lot of practice and have the know-how, but not...
Forum: Aviation Safety Discussion Forum 10-16-2014, 02:52 AM
Replies: 11
Views: 485
Posted By Gabriel
Are you talking about a trivial case like the...

Are you talking about a trivial case like the pilot saying to the flight attendant "my daughter works in the emergency room of the local hospital" or the pilot replying to the ATC "no, we are not...
Forum: Aviation Safety Discussion Forum 10-15-2014, 09:54 PM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Would the flight directors command a pitch up at...

Would the flight directors command a pitch up at all, and such a pitch up in particular, in a case like this? I guess that the vertical mode was alt hold so why would it command 7000fpm climb?

...
Forum: Aviation Safety Discussion Forum 10-15-2014, 08:30 PM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Two stooges. Dubois arrived too late, by the end...

Two stooges. Dubois arrived too late, by the end of my description of the events.

I think that they understood the instruments. They were able to control the airplane at their will following them,...
Forum: Aviation Safety Discussion Forum 10-15-2014, 08:16 PM
Replies: 11
Views: 485
Posted By Gabriel
Not necessarily.

Not necessarily.
Forum: Aviation Safety Discussion Forum 10-15-2014, 07:35 PM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Between the point where the AP/AT gave up and the...

Between the point where the AP/AT gave up and the point, almost 2 minutes later, stall warning stopped (after some 30 seconds of uninterrupted shouting) due to a low indicated airspeed limitation:...
Forum: Aviation Safety Discussion Forum 10-15-2014, 02:15 PM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Evan, When I say DO NOTHING I do mean...

Evan,

When I say DO NOTHING I do mean NOTHING, Keep your hand and foot off the controls. Remove the pilots from the cockpit if that's what it takes. Trying to keep FL350 doesn't qualify as...
Forum: Aviation Safety Discussion Forum 10-15-2014, 08:12 AM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Yes. There were several cases where UAS led to...

Yes. There were several cases where UAS led to loss of control.
Enough that the FAA modified a rule to request that alarm be on whenever the Pitot tubes are not heated.
Forum: Aviation Safety Discussion Forum 10-15-2014, 03:49 AM
Replies: 2,457
Views: 322,087
Posted By Gabriel
Evan, you are making it more complicated than it...

Evan, you are making it more complicated than it is.
Use the engines instruments to figure the AoA? That's new.
Even the attitude indicator combined with the VSI can be complex, unless the VSI is...
Forum: Aviation Discussion Forum 10-14-2014, 06:51 PM
Replies: 32
Views: 578
Posted By Gabriel
The business class was invented by Jan Carlzon,...

The business class was invented by Jan Carlzon, SAS' CEO, with the slogan "the closer you'll be from first class for the price of a full fare tourist class seat", or something like that.

Or at...
Forum: Aviation Safety Discussion Forum 10-14-2014, 06:43 PM
Replies: 11
Views: 485
Posted By Gabriel
Ok, but there is one every time a pilot says...

Ok, but there is one every time a pilot says "emergency" (or mayday or pan).

So the real question before judging is... Did the pilot declare an emergency?
Forum: Aviation Safety Discussion Forum 10-14-2014, 12:37 AM
Replies: 18
Views: 577
Posted By Gabriel
Figure this: Your airplane is on fire. Cabin...

Figure this:
Your airplane is on fire. Cabin fire, I mean.
The plane lands successfully, but because fire damage to some systems, the air/ground system fails. The plane doesn't "know" that the...
Forum: Aviation Safety Discussion Forum 10-13-2014, 07:48 AM
Replies: 18
Views: 577
Posted By Gabriel
Yes, but they can also do good things if they...

Yes, but they can also do good things if they have access:
- They can stop the CVR after an event to preserve information about an incident that would otherwise be deleted after 30 minutes.
- They...
Forum: Aviation Discussion Forum 10-12-2014, 03:56 PM
Replies: 32
Views: 578
Posted By Gabriel
Manufacturers try to make the plane more...

Manufacturers try to make the plane more comfortable and then it's the job of the airlines to trade that added comfort in for more cramped capacity.

When the 777 was launched it was announced like...
Forum: Aviation Safety Discussion Forum 10-11-2014, 05:51 AM
Replies: 18
Views: 577
Posted By Gabriel
Hum, yes. Exactly that has been done before some...

Hum, yes. Exactly that has been done before some suicidal pilot intervention.


Hum, yes. PACs off, outflow valve open. There are good reasons to suspect the the MH pilot might have done just...
Forum: Aviation Safety Discussion Forum 10-11-2014, 03:58 AM
Replies: 18
Views: 577
Posted By Gabriel
Fuse can be automatic, with no pilot intervention...

Fuse can be automatic, with no pilot intervention or access.
AA batteries can catch fire and explode. They can also leak corrosive electrolyte.
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:53 PM
Replies: 50
Views: 1,264
Posted By Gabriel
This kind of things don't need to go wrong and...

This kind of things don't need to go wrong and are not inherently unsafe, meaning that it is well within the physical possibilities of the airplane.

...
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:28 PM
Replies: 50
Views: 1,264
Posted By Gabriel
Define "performance envelope". Yes, they...

Define "performance envelope".

Yes, they didn't lose control and the plane didn't break, so it was within it's "physical" performance. Well within? I highly doubt it but cannot prove it otherwise....
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:20 PM
Replies: 50
Views: 1,264
Posted By Gabriel
Yes. What does change is: - What is "necessary...

Yes. What does change is:
- What is "necessary for the mission".
- The risk management process and planning.



Regardless of how valid your concern might be, structural integrity was not at...
Forum: Aviation Safety Discussion Forum 10-10-2014, 03:04 AM
Replies: 50
Views: 1,264
Posted By Gabriel
Yes.

Yes.
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:57 AM
Replies: 50
Views: 1,264
Posted By Gabriel
Any pilot that, during final approach / landing...

Any pilot that, during final approach / landing and at very low altitude, finds himself either

a) having to keep 4 seconds on full roll input to control the plane, or
b) exceeding 20 degrees of...
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:15 AM
Replies: 50
Views: 1,264
Posted By Gabriel
And by the way, Note that you don't need to...

And by the way,

Note that you don't need to violate any written rule to be in violation with the FAA. If you do something that the FAA judges an unjustified risk for no good operative or safety...
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:08 AM
Replies: 50
Views: 1,264
Posted By Gabriel
The saying goes: There are three kinds of...

The saying goes:

There are three kinds of rules:
1- Rules that you should not violate (common sense, good practices, etc...)
2- Rules that you must not violate (laws, regulations, procedures)...
Forum: Aviation Safety Discussion Forum 10-10-2014, 01:03 AM
Replies: 50
Views: 1,264
Posted By Gabriel
When you have a 400 tones airplane flying somehow...

When you have a 400 tones airplane flying somehow close to the minimum airspeed it would fly, response to control inputs is not the quickest, especially not with the ailerons that loose effectiveness...
Forum: Aviation Safety Discussion Forum 10-10-2014, 12:58 AM
Replies: 50
Views: 1,264
Posted By Gabriel
Guys, what's up with all you today? You...

Guys, what's up with all you today?

You meant that if a pilot buzzes the barn 100 times with no issues we only criticize him for being dangerous when he crashes in the 101th attempt?

Thanks God...
Forum: Aviation Safety Discussion Forum 10-10-2014, 12:56 AM
Replies: 50
Views: 1,264
Posted By Gabriel
Yes, that's correct. And an airplanes doesn't...

Yes, that's correct.
And an airplanes doesn't crash until it hits the ground so contouring the landscape at 400 MPH 20 ft above the ground I guess it's just ok... until you are not longer 20 ft...
Forum: Aviation Safety Discussion Forum 10-10-2014, 12:53 AM
Replies: 50
Views: 1,264
Posted By Gabriel
He said roll reversal, not bank reversal.

He said roll reversal, not bank reversal.
Forum: Aviation Safety Discussion Forum 10-10-2014, 12:51 AM
Replies: 50
Views: 1,264
Posted By Gabriel
You mean from a structural point of view? ...

You mean from a structural point of view?

Yes, they are equally dangerous since the structural requirement for the ailerons and wings don't ask for, for example, to be established in a max roll...
Forum: Aviation Safety Discussion Forum 10-09-2014, 02:03 AM
Replies: 50
Views: 1,264
Posted By Gabriel
This 707 was going at high speed, low angle of...

This 707 was going at high speed, low angle of attack and far from the ground.
Still crazy, but maybe these are better comparisons:

https://www.youtube.com/watch?v=FUEhNKBi4DY...
Forum: Aviation Safety Discussion Forum 10-08-2014, 03:54 AM
Replies: 50
Views: 1,264
Posted By Gabriel
New 747F waves Boeing field goodby. Safe? Sane?

IMHO, no.

<iframe width="640" height="360" src="//www.youtube.com/embed/bnBr3enzW1I" frameborder="0" allowfullscreen></iframe>
Forum: Aviation Safety Discussion Forum 10-04-2014, 03:23 PM
Replies: 6
Views: 355
Posted By Gabriel
What elaw says is correct. An airplane needs...

What elaw says is correct.

An airplane needs airspeed, not airspeed INDICATION, to fly.

If you were happily flying straight and level at cruise speed with a given pitch and a given power, then...
Forum: Aviation Discussion Forum 09-25-2014, 04:59 AM
Replies: 6
Views: 290
Posted By Gabriel
AF, BA, DL, etc operate Gulfstreams for scheduled...

AF, BA, DL, etc operate Gulfstreams for scheduled revenue flights?
Forum: Aviation Discussion Forum 09-25-2014, 12:04 AM
Replies: 6
Views: 290
Posted By Gabriel
I think it's more aimed to the top end of the...

I think it's more aimed to the top end of the bizjet market.

Aerion will pay to Airbus in the form of propietary information transfer, they have several patents reagrding high-speed natural...
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