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Forum: Aviation Discussion Forum 09-25-2014, 04:59 AM
Replies: 6
Views: 191
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: 191
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...
Forum: Aviation Safety Discussion Forum 09-24-2014, 04:48 AM
Replies: 26
Views: 1,061
Posted By Gabriel
Well, I really don't expect to see many (many=1)...

Well, I really don't expect to see many (many=1) surprisingly new kind of accident in an airplane design from the 60's with engine designs from the 70's.

A new avionics system that goes awry?...
Forum: Aviation Safety Discussion Forum 09-24-2014, 04:37 AM
Replies: 96
Views: 5,636
Posted By Gabriel
The TAT plot puzzles me...

The TAT plot puzzles me...
Forum: Aviation Safety Discussion Forum 09-23-2014, 02:58 PM
Replies: 96
Views: 5,636
Posted By Gabriel
So either they were never "very" staled, or the...

So either they were never "very" staled, or the stickpusher didn't work for other reason (maybe a failure, unlikely, or maybe there is some other logic in it, like "no stickpusher above certain...
Forum: Aviation Safety Discussion Forum 09-23-2014, 01:41 PM
Replies: 96
Views: 5,636
Posted By Gabriel
Good point in a reader's comment in AvHerald: ...

Good point in a reader's comment in AvHerald:

"the crew already decided that they were too heavy for FL 330".

Why did they level off at 310? It's not like it's a super busy airspace.
Why...
Forum: Aviation Safety Discussion Forum 09-23-2014, 01:26 PM
Replies: 96
Views: 5,636
Posted By Gabriel
I would like to see AoA and stickshaker in the...

I would like to see AoA and stickshaker in the plots.

AoA I know that they have the raw data, just that they don't know how to "translate" it yet.

But this guys seem to be doing a very good...
Forum: Aviation Safety Discussion Forum 09-23-2014, 01:22 PM
Replies: 96
Views: 5,636
Posted By Gabriel
Disrupted airflow from the stalled wing is...

Disrupted airflow from the stalled wing is another possible cause for engine's "funny" behavior in low-wing, rear-mounted-engines airplanes.
Forum: Aviation Safety Discussion Forum 09-23-2014, 11:55 AM
Replies: 96
Views: 5,636
Posted By Gabriel
Yes, but I am not convinced myself. If the AT was...

Yes, but I am not convinced myself. If the AT was keeping the max allowed EPR, I would expect to see a constant EPR with N1, N2 and FF diminishing.
Forum: Aviation Safety Discussion Forum 09-23-2014, 11:53 AM
Replies: 96
Views: 5,636
Posted By Gabriel
I don't dare to "imply" it. I see this as one...

I don't dare to "imply" it. I see this as one possibility.


Not exactly "increasing throttle". The operatrive parameter in this engines is EPR (not N1 like in others). So Otto increased EPR until...
Forum: Aviation Safety Discussion Forum 09-23-2014, 01:16 AM
Replies: 96
Views: 5,636
Posted By Gabriel
1- Compare EPR vs N1, N2 and fuel flow. 2- Look...

1- Compare EPR vs N1, N2 and fuel flow.
2- Look at picture of the engine in page 19.
Forum: Aviation Safety Discussion Forum 09-22-2014, 05:33 PM
Replies: 26
Views: 1,061
Posted By Gabriel
Let's K.I.S.S. In the history of aviation,...

Let's K.I.S.S.

In the history of aviation, has an engine fire propagated into the fuselage via the bleed-air ducting, ever?

If the answer to that question is "no" (as I think it is, at least I...
Forum: Aviation Safety Discussion Forum 09-22-2014, 12:57 AM
Replies: 96
Views: 5,636
Posted By Gabriel
Very interesting interim report. Very well...

Very interesting interim report. Very well prepared.

http://www.bea.aero/docspa/2014/ec-v140724.e1.en/pdf/ec-v140724.e1.en.pdf

In a nutshell, the plane reached cruise level and started to slow...
Forum: Aviation Safety Discussion Forum 09-19-2014, 11:38 PM
Replies: 26
Views: 1,061
Posted By Gabriel
If it was a fire at all, then it was an ENGINE...

If it was a fire at all, then it was an ENGINE fire.
Do you know where the engine is located? There is no way whatsoever for the O2 to reach the engine.

And the mask don't "just" enrich the cabin...
Forum: Aviation Safety Discussion Forum 09-19-2014, 01:04 AM
Replies: 26
Views: 1,061
Posted By Gabriel
SOP in engine failed landings. Apparently...

SOP in engine failed landings.

Apparently the flight crew was not confident that the fire was extinguished and ordered an evacuation. They informed the tower that they were going to evacuate and...
Forum: Aviation Discussion Forum 09-17-2014, 04:26 AM
Replies: 11
Views: 290
Posted By Gabriel
Wow, that's USD 145 million!!! If they manage...

Wow, that's USD 145 million!!!
If they manage to get more profit and value for the shareholders for that, I'm ok with it. It's called "return on investment" (and a 145M investment is not a small...
Forum: Aviation Safety Discussion Forum 09-17-2014, 04:13 AM
Replies: 12
Views: 617
Posted By Gabriel
Yes, but only without subtitles and not great...

Yes, but only without subtitles and not great quality (the youtube here is better and I think you should not have copyright protection in this link).
...
Forum: Aviation Discussion Forum 09-16-2014, 01:40 PM
Replies: 3
Views: 180
Posted By Gabriel
More spraying: ...

More spraying:
https://www.youtube.com/watch?v=dBjTnS-X8ik

And look this military plane spraying stuff over innocent people on the beach.
https://www.youtube.com/watch?v=mlC_Wjhbcqc

:nonono:
Forum: Aviation Safety Discussion Forum 09-16-2014, 04:08 AM
Replies: 12
Views: 617
Posted By Gabriel
[off topic][ And what are you waiting...

[off topic][



And what are you waiting for?
I have a few years recommending it here and, AFAIK, nobody here has seen it yet (or at least nobody commented it).

An aviation safety movie...
Forum: Aviation Safety Discussion Forum 09-16-2014, 03:39 AM
Replies: 21
Views: 941
Posted By Gabriel
- The box (enclosure) is 1/8" (about 3mm) thick...

- The box (enclosure) is 1/8" (about 3mm) thick stainless steel, not titanium. The venting duct is made of titanium.
- The burst disk is designed to keep the battery compartment pressurized, not to...
Forum: Aviation Safety Discussion Forum 09-16-2014, 12:52 AM
Replies: 12
Views: 617
Posted By Gabriel
Had you been standing exactly there when the LAPA...

Had you been standing exactly there when the LAPA 737 went of the runway during take off, you would be very dead.

That said, it's the first time that something like that happens in Aeroparque...
Forum: Aviation Safety Discussion Forum 09-15-2014, 12:09 AM
Replies: 12
Views: 617
Posted By Gabriel
King Air 300 down near Buenos Aires

A King Air 300 had crashed in a residential neighborhood near Buenos Aires, killing the owner-pilot and his wife.

The plane was headed to Aeroparque (Buenos Aires' downtown airport). The zone...
Forum: Aviation Safety Discussion Forum 09-11-2014, 01:33 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Since the warning would start as soon as this...

Since the warning would start as soon as this indication (cabin altitude) exceeds 10000ft, mental confusion should not be a factor initially (not at least hypoxia-borne).
Forum: Aviation Safety Discussion Forum 09-10-2014, 02:00 PM
Replies: 46
Views: 1,352
Posted By Gabriel
A lot of "back ups" are replaced by "paln Bs" in...

A lot of "back ups" are replaced by "paln Bs" in any single-engine airplane even before starting to mess with the pressurization.



Well, the warning is triggered by the cabin altitude...
Forum: Aviation Safety Discussion Forum 09-10-2014, 02:30 AM
Replies: 285
Views: 22,930
Posted By Gabriel
It seems that kind of view of the runway they had...

It seems that kind of view of the runway they had when they called it in sight can be described with one word: none.


http://avherald.com/h?article=466d969f&opt=0

Aren't you guys getting a...
Forum: Aviation Safety Discussion Forum 09-10-2014, 01:33 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Evan, for the last time: If you open a hole in...

Evan, for the last time:
If you open a hole in the fuselage and the pressure inside is higher than outside (including the dynamic pressure), air will go out, not come in.

Is this that hard to...
Forum: Aviation Safety Discussion Forum 09-10-2014, 01:31 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Yes, If you are at 70,000ft and Mach 1.4, and...

Yes,
If you are at 70,000ft and Mach 1.4, and suffer an explosive decompression, the cabin altitude will not go so high as 70,000ft where the air pressure is 0.04 atm, but will instead remain at...
Forum: Aviation Safety Discussion Forum 09-10-2014, 12:39 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Yes, that's why I've said "direct ram air". You...

Yes, that's why I've said "direct ram air".
You can have a RAT that drives a compressor, and if the RAT is big enough you can provide any pressurization level you want.


That is the problem:...
Forum: Aviation Safety Discussion Forum 09-09-2014, 03:20 PM
Replies: 46
Views: 1,352
Posted By Gabriel
If such master warning exists, it should trigger...

If such master warning exists, it should trigger at a cabin altitude that is steel well breathable, so no hypoxic impaired state of mind should have be present by then.


Does ram air has the...
Forum: Aviation Discussion Forum 09-09-2014, 05:04 AM
Replies: 2
Views: 284
Posted By Gabriel
"These new "gamechanger" aircraft will allow...

"These new "gamechanger" aircraft will allow Ryanair to lower our costs and airfares, while improving our customer experience with more leg room", said O'Leary.

Ryanair, O'Leary and "more leg...
Forum: Aviation Safety Discussion Forum 09-09-2014, 04:46 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Oh, well. It seems that a red line in the dial...

Oh, well. It seems that a red line in the dial would qualify after all as per b-6) (however stupid that is), because issue d clarifies:

(d) If certification for operation above 45,000 feet and not...
Forum: Aviation Safety Discussion Forum 09-09-2014, 04:36 AM
Replies: 46
Views: 1,352
Posted By Gabriel
23.841 Pressurized cabins. (b) Pressurized...

23.841 Pressurized cabins.

(b) Pressurized cabins must have at least the following valves, controls, and indicators, for controlling cabin pressure:

5) Instruments to indicate to the pilot the...
Forum: Aviation Safety Discussion Forum 09-09-2014, 04:34 AM
Replies: 46
Views: 1,352
Posted By Gabriel
And yes, it would have been too stupid, had it...

And yes, it would have been too stupid, had it been true.

23.841 Pressurized cabins.

(b) Pressurized cabins must have at least the following valves, controls, and indicators, for controlling...
Forum: Aviation Safety Discussion Forum 09-09-2014, 04:29 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Well, given the "stealth" nature that both...

Well, given the "stealth" nature that both pressurization issues and hypoxia can present, that's quite stupid.

It's like putting a "cargo hold extinguisher" handle in the cockpit without a "cargo...
Forum: Aviation Safety Discussion Forum 09-07-2014, 02:41 PM
Replies: 46
Views: 1,352
Posted By Gabriel
Well, the little experience that we have with...

Well, the little experience that we have with controllers being proactive, shows that pilots that had already pretty much lost their judgement and reasoning abilities, preserve the basic skills to...
Forum: Aviation Safety Discussion Forum 09-07-2014, 02:39 AM
Replies: 46
Views: 1,352
Posted By Gabriel
I should review the requirements in the FARs. I...

I should review the requirements in the FARs.
I wonder if part 23 airplanes in general, and pressurized turbine singles in particular, are required to:
- Have a cabin altitude warning.
- Carry...
Forum: Aviation Safety Discussion Forum 09-06-2014, 08:35 PM
Replies: 46
Views: 1,352
Posted By Gabriel
Well, there might be many issues that might make...

Well, there might be many issues that might make a pilot want to descend to troubleshoot. But that's not the point.

The point is that, out of those many, there is ONE that can also make the pilot...
Forum: Aviation Safety Discussion Forum 09-06-2014, 03:53 PM
Replies: 46
Views: 1,352
Posted By Gabriel
Exactly my thought, 3we. They said they had...

Exactly my thought, 3we.

They said they had a problem and requested 18000. Even more, they were offered a higher "lower" and they replied "well, we will need lower than that".

The ATC was 100%...
Forum: Aviation Safety Discussion Forum 09-06-2014, 04:53 AM
Replies: 46
Views: 1,352
Posted By Gabriel
Even in an airplane that is just 5 months old?

Even in an airplane that is just 5 months old?
Forum: Aviation Safety Discussion Forum 09-04-2014, 01:17 AM
Replies: 27
Views: 966
Posted By Gabriel
I beg you pardon? Physics, geometry and biology...

I beg you pardon? Physics, geometry and biology are not my rules. I don't fit and I can't help that.

I do try to reserve an emergency exit or bulkhead row.
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