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Forum: Aviation Safety Discussion Forum 12-19-2014, 11:43 PM
Replies: 5
Views: 181
Posted By Gabriel
And another total air disaster is that it took 70...

And another total air disaster is that it took 70 minutes for the plane to land after declaring the emergency, even when the pilots were concerned enough that they "instructed emergency services to...
Forum: Aviation Safety Discussion Forum 12-19-2014, 11:35 PM
Replies: 5
Views: 181
Posted By Gabriel
The TOTAL AIR DISASTER here is that they had a...

The TOTAL AIR DISASTER here is that they had a 747-400 with 142 pax that would have fit in a 737.
Forum: Aviation Safety Discussion Forum 12-19-2014, 12:58 AM
Replies: 9
Views: 396
Posted By Gabriel
We have a winner!!! More here: ...

We have a winner!!!



More here:
http://avherald.com/h?article=47ef4f43&opt=0

Edit: 4:45 hours to burn fuel even after dump? Where they burning fuel at max endurance speed or what?
Forum: Aviation Safety Discussion Forum 12-17-2014, 02:59 AM
Replies: 2,498
Views: 330,476
Posted By Gabriel
Exactly my thought...

Exactly my thought...
Forum: Aviation Safety Discussion Forum 12-17-2014, 12:47 AM
Replies: 2,498
Views: 330,476
Posted By Gabriel
Thanks. Any idea what this means (under...

Thanks.
Any idea what this means (under Alternate Law, NOT abnormal alternate)?
"Certain failures cause the system to revert to Alternate Law without speed stability."
Forum: Aviation Safety Discussion Forum 12-16-2014, 04:47 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
Could you provide a source please? Not that I...

Could you provide a source please?
Not that I don't believe you, but I want to investigate more.
Forum: Aviation Safety Discussion Forum 12-16-2014, 04:43 AM
Replies: 2,498
Views: 330,476
Posted By Gabriel
3we, Evan, I think both of you are right and...

3we, Evan, I think both of you are right and wrong.

In a traditional plane (or one FBW that simulates the traditional plane), if you pull up the nose will go up, will overshoot the equilibrium...
Forum: Aviation Safety Discussion Forum 12-16-2014, 04:20 AM
Replies: 2,498
Views: 330,476
Posted By Gabriel
In fact, you are wrong (almost). The plane...

In fact, you are wrong (almost).

The plane was not in direct law, but in alternate law.
The control algorithm for pitch is the same in normal and alternate law: Stick deflection is proportional...
Forum: Aviation Safety Discussion Forum 12-14-2014, 10:34 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
You don't need a hint. The altitude...

You don't need a hint.

The altitude decreased 350/400ft. While the magnitude of the "altitude loss" is moderate, as you say, the rate at which it happens is not. That loss happens in less than 2...
Forum: Aviation Safety Discussion Forum 12-14-2014, 08:46 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
I think I've found out the reason for the initial...

I think I've found out the reason for the initial (and I mean VERY initial) reaction to pull up hard immediately after the AP and AT disconnected.

Closely look at the PFD at between 2:18 and 2:20...
Forum: Aviation Safety Discussion Forum 12-14-2014, 08:38 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
That WAS the standard commercial aviation...

That WAS the standard commercial aviation procedure, until the FAA and EASA read my "stall" thread. Now they have the same procedure for stall and approach to stall, which is "lower the AoA first,...
Forum: Aviation Safety Discussion Forum 12-14-2014, 04:27 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
Ok, but why was he telling the computer "I want...

Ok, but why was he telling the computer "I want the nose high, I want a 1.5G pull up, I want to keep climbing past my ceiling"????? Especially in the first climb after the AP disconnected.

Once in...
Forum: Aviation Safety Discussion Forum 12-14-2014, 12:00 AM
Replies: 2,498
Views: 330,476
Posted By Gabriel
And now we know why it showed some nose-up cues:...

And now we know why it showed some nose-up cues: Someone selected VERT SPEED and +6000 fpm first and +1400fpm later.


Not enough for me. Note that they were not "erratic". They all the time tried...
Forum: Aviation Safety Discussion Forum 12-13-2014, 04:07 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
You forgot to add the nose-up attitude and the 57...

You forgot to add the nose-up attitude and the 57 cases of the stall warning sounding, not with a fuzzy horn, but clearly shouting "Stall, stall!!!"
Forum: Aviation Safety Discussion Forum 12-13-2014, 03:13 PM
Replies: 2,498
Views: 330,476
Posted By Gabriel
Guys, this is a 200MB animation video prepared by...

Guys, this is a 200MB animation video prepared by the BEA that you HAVE to download and watch.
http://www.bea.aero/fr/enquetes/vol.af.447/videos/animation.deroulement.du.vol.mp4


Now available...
Forum: Aviation Safety Discussion Forum 12-13-2014, 03:19 AM
Replies: 39
Views: 868
Posted By Gabriel
And a regulation like that will hardly fix those...

And a regulation like that will hardly fix those pilots.
Forum: Aviation Safety Discussion Forum 12-13-2014, 03:16 AM
Replies: 39
Views: 868
Posted By Gabriel
And its operation cost too. That's what's...

And its operation cost too.

That's what's wrong with the Cheyenne.

Dick always complains of how much it costs to operates it.
He once paid the reservation for a Cessna Mustang. Then he backed...
Forum: Aviation Safety Discussion Forum 12-13-2014, 02:23 AM
Replies: 146
Views: 7,247
Posted By Gabriel
It's simpler than that. You have to link the...

It's simpler than that. You have to link the take-off performance monitoring system with a GPS and an airport database. All except the take-off performance monitoring system already exist in most...
Forum: Aviation Safety Discussion Forum 12-12-2014, 02:24 PM
Replies: 39
Views: 868
Posted By Gabriel
Fixed. Could he get rid of the Cheyenne...

Fixed.

Could he get rid of the Cheyenne already?
Forum: Aviation Safety Discussion Forum 12-12-2014, 02:20 PM
Replies: 146
Views: 7,247
Posted By Gabriel
Probably not. Many times the runway available is...

Probably not. Many times the runway available is longer than needed and the planes still take off from the beginning of the runway. In those cases pilots will typically compute and use a reduced...
Forum: Aviation Safety Discussion Forum 12-12-2014, 04:01 AM
Replies: 146
Views: 7,247
Posted By Gabriel
And we have not even thought of this other...

And we have not even thought of this other failure mode.
Like in other cases (headwind much lower than reported), a take-off acceleration measurement per-se will not be enough though. It would need...
Forum: Aviation Discussion Forum 12-12-2014, 02:44 AM
Replies: 18
Views: 681
Posted By Gabriel
airliner. |ɛər'laɪnər| n. Airplane operated by...

airliner. |ɛər'laɪnər|
n. Airplane operated by airlines, flown by two pilots, with a fuselage of circular cross-section, low wings that are moderately swept, low tail, hydraulically powered and...
Forum: Aviation Safety Discussion Forum 12-12-2014, 01:48 AM
Replies: 39
Views: 868
Posted By Gabriel
Doctor killer.

Doctor killer.
Forum: Aviation Safety Discussion Forum 12-12-2014, 01:48 AM
Replies: 39
Views: 868
Posted By Gabriel
Who?

Who?
Forum: Aviation Safety Discussion Forum 12-10-2014, 02:59 AM
Replies: 39
Views: 868
Posted By Gabriel
LH, Are you feeling well? Do you realize that...

LH, Are you feeling well? Do you realize that spatial disorientation is not the same than CFIT, rather it's almost the opposite?
Forum: Aviation Safety Discussion Forum 12-09-2014, 04:32 AM
Replies: 39
Views: 868
Posted By Gabriel
No need to appologize. You just puzzled me how...

No need to appologize. You just puzzled me how you started to talk about the CFIT of a BAe 146 in Switzerland and about the lack of GPWS in small propeller planes in what seemed to be a post in this...
Forum: Aviation Safety Discussion Forum 12-09-2014, 03:04 AM
Replies: 39
Views: 868
Posted By Gabriel
LH, The thread title says "BIZJET". So ok,...

LH,

The thread title says "BIZJET". So ok, not your 747, but "small propeller aircraft" doesn't belong here, and "GPWS" does belong here (it was an Embraer, you bet it had all the bells and...
Forum: Aviation Safety Discussion Forum 12-09-2014, 02:21 AM
Replies: 39
Views: 868
Posted By Gabriel
Bizjet vs house = lose / lose

Three died in the plane + 3 more in the house (mother + 2 kids)

Sad :(

http://www.cnn.com/2014/12/08/us/maryland-plane-in-house/
Forum: Aviation Safety Discussion Forum 12-09-2014, 01:52 AM
Replies: 20
Views: 645
Posted By Gabriel
The problem is the same than with the laser...

The problem is the same than with the laser beams: It's hard to get the offender (unlike the china shop scenario).

Any idiot can fly a drone near (or aim a laser at) an airplane and 1 minute later...
Forum: Aviation Safety Discussion Forum 12-07-2014, 12:35 AM
Replies: 57
Views: 1,586
Posted By Gabriel
Turning below 400' after take off is not always...

Turning below 400' after take off is not always dangerous.
Or, at least, sometimes not doing so is even more dangerous.

https://www.youtube.com/watch?v=1vSM49-U3ZM

"Terrain" "Woop woop - pull...
Forum: Aviation Safety Discussion Forum 11-28-2014, 03:54 PM
Replies: 9
Views: 494
Posted By Gabriel
People don't realize how "smooth" the aerodynamic...

People don't realize how "smooth" the aerodynamic forces are.

This doesn't answer your question, but to give an idea, take the Tomahawk.
MTOW: 750 Kg
Wing area: 10m2 = 100,000 cm2 (it's more,...
Forum: Aviation Safety Discussion Forum 11-19-2014, 01:47 AM
Replies: 35
Views: 1,288
Posted By Gabriel
I demand an explanation!

I demand an explanation!
Forum: Aviation Safety Discussion Forum 11-13-2014, 12:21 PM
Replies: 26
Views: 723
Posted By Gabriel
3WE, Something like this for example? ...

3WE,

Something like this for example?

http://avherald.com/h?article=47d2ba73&opt=0
Forum: Aviation Safety Discussion Forum 11-12-2014, 01:52 PM
Replies: 57
Views: 1,586
Posted By Gabriel
No, actually I think that some rules are good...

No, actually I think that some rules are good ideas. But not too many, especially in non-commercial operations where you are not trying to save the general public.

In particular, your "no turns...
Forum: Aviation Safety Discussion Forum 11-12-2014, 05:58 AM
Replies: 57
Views: 1,586
Posted By Gabriel
You will be horrorized by this but.... In...

You will be horrorized by this but....

In non-towered airports in VFR conditions you can land in any runway (including coming head-on with you that are taking off) and make any approach you like...
Forum: Aviation Safety Discussion Forum 11-12-2014, 05:48 AM
Replies: 57
Views: 1,586
Posted By Gabriel
Yes, for a 747 that gets to 400 ft 15 seconds...

Yes, for a 747 that gets to 400 ft 15 seconds after lift-off, not for a C-150 that takes one minute.

The idea is to be established in a stabilized climb-out before starting maneuvering.

Even...
Forum: Aviation Safety Discussion Forum 11-12-2014, 05:41 AM
Replies: 57
Views: 1,586
Posted By Gabriel
No. I am not sure what you mean with "that", but...

No. I am not sure what you mean with "that", but nothing in this video looks like weather cocking.
Forum: Aviation Safety Discussion Forum 11-12-2014, 05:37 AM
Replies: 57
Views: 1,586
Posted By Gabriel
I don't know what video you are watching. ...

I don't know what video you are watching.

One wing goes up as much as the other goes down precisely at the time that the airspeed reaches the slow end of the white arc, which means that they were...
Forum: Aviation Safety Discussion Forum 11-11-2014, 04:16 AM
Replies: 3
Views: 319
Posted By Gabriel
AvHerald doesn't report these accidents. GA...

AvHerald doesn't report these accidents. GA (including BizAv) is beyond its scope. Thy only report commercial aviation incidents and accidents.
Forum: Aviation Safety Discussion Forum 11-11-2014, 04:10 AM
Replies: 57
Views: 1,586
Posted By Gabriel
My observations in your observations ;) ...

My observations in your observations ;)


For most of the time, no. Look at the other video (the poor quality one) and you'll see that the airspeed is very stable (ok, they are slowing down all...
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