AirAsia QZ8501 Missing

Author
Discussion

Brite spark

2,057 posts

203 months

Monday 29th December 2014
quotequote all
Pesty said:
Followed two other planes who went through the same area. Would they have reorted heavy weather?

Showed this on the news earlier, with the plane changing direction. Then they showed a weather map of the area, if they were oriented the same way the plane would have gone deeper into the storm rather than away from it.

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Edited by Brite spark on Monday 29th December 04:45

cossy400

3,188 posts

186 months

Monday 29th December 2014
quotequote all
CAPP0 said:
cossy400 said:
Bbc sayin search called off. For the time being.
Yes but only due to daylight and weather conditions. Resuming pretty much about now.

I guess the best guess at present is that the plane was somehow a victim if the weather, but I do hope they find the wreckage - not just for the relatives, but if this one doesn't show up, the airlines and the governments are going to have a real headache on their hands, and the conspiracy theorists are going to beat themselves off into oblivion.
Oh god yea.

Fresh day/fresh eyes as such, swiftly found im hoping.

croyde

23,217 posts

232 months

Monday 29th December 2014
quotequote all
Gargamel said:
You had me at OK......


Great post, I was with you until about half way..
hehe

Scuffers

20,887 posts

276 months

Monday 29th December 2014
quotequote all
Ginetta G15 Girl said:
OK, with my QFI hat on:
All good stuff, except it was at FL320, they asked for permission to go to FL380 but it was denied (traffic).


Ginetta G15 Girl

3,220 posts

186 months

Monday 29th December 2014
quotequote all
In which case, and using the same assumptions as above, the KCAS calculate out as:

ISA : 212 kts
ISA +10 : 206 kts
ISA +20 : 202 kts
ISA -10 : 216 kts
ISA -20 : 222 kts


humpbackmaniac

1,896 posts

243 months

Monday 29th December 2014
quotequote all
So assuming the poor thing stalled and started to fall, am I being overly simplistic by thinking they could just restart/gain sufficient speed etc to recover or at least make a Mayday call?
Yes I've watched too much Red Bull Air Races, and am aware a 320 may not respond in exactly the same acrobatic manner but I am trying to appease my fears of flying in the area which I do quite often?
Or was the storm so violent it broke up immediately, in which case if that is a real risk I'm scared and will stop laughing at turbulence.

A poor Ryan Air Pilot sat next to a very inquisitive me on a bumpy flight from Glasgow to London last year, and took pride in explaining to me "No plane has ever broken up due to turbulence" is that no longer the case?

mjb1

2,559 posts

161 months

Monday 29th December 2014
quotequote all
Scuffers said:
All good stuff, except it was at FL320, they asked for permission to go to FL380 but it was denied (traffic).
Didn't it loose contact at 36k ft though?

AreOut

3,658 posts

163 months

Monday 29th December 2014
quotequote all
humpbackmaniac said:
So assuming the poor thing stalled and started to fall, am I being overly simplistic by thinking they could just restart/gain sufficient speed etc to recover or at least make a Mayday call?
Yes I've watched too much Red Bull Air Races, and am aware a 320 may not respond in exactly the same acrobatic manner but I am trying to appease my fears of flying in the area which I do quite often?
Or was the storm so violent it broke up immediately, in which case if that is a real risk I'm scared and will stop laughing at turbulence.

A poor Ryan Air Pilot sat next to a very inquisitive me on a bumpy flight from Glasgow to London last year, and took pride in explaining to me "No plane has ever broken up due to turbulence" is that no longer the case?
broke up no, stalled likely

this one is very similar case

http://en.wikipedia.org/wiki/Air_Algérie_Flig...

Slartifartfast

2,141 posts

234 months

Monday 29th December 2014
quotequote all
Can somebody explain why in these circumstances they say "it disappeared off the radar"? I would have thought that in the time it would take to drop from 36k feet to sea level the radar would pick it up on the way down - even if it had disintegrated, surely there would be a radar reflection? Or is this something to do with active/passive radar?

Le TVR

3,092 posts

253 months

Monday 29th December 2014
quotequote all
humpbackmaniac said:
A poor Ryan Air Pilot sat next to a very inquisitive me on a bumpy flight from Glasgow to London last year, and took pride in explaining to me "No plane has ever broken up due to turbulence" is that no longer the case?


What is left of G-APFE falling from the sky after being subject to extreme turbulence cause by a 'mountain wave' effect over Mount Fuji.

It was a Boeing 707.

djc206

12,499 posts

127 months

Monday 29th December 2014
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kapiteinlangzaam said:
Yes.

It will depend on whether the ATC centre is using primary or secondary radar.

If secondary, then once electrical power is cut to the transponder on the plane there will not be any more radar returns.

Most civil ATC systems around the world use secondary only (because its cheaper). Military radar in the area might have primary coverage.
We still have primary at London

djc206

12,499 posts

127 months

Monday 29th December 2014
quotequote all
kapiteinlangzaam said:
We still have primary at MUAC too, but worldwide we are in the minority.
Lucky us!!

Pesty

42,655 posts

258 months

Monday 29th December 2014
quotequote all

This titbit was found on another forum. No link. Though.

"Air traffic control approved the pilot's request to turn left but denied permission for the plane to climb to 38,000 feet from 32,000 feet, Djoko Murjatmodjo, an aviation official at the Indonesian Transport Ministry, told the national newspaper Kompas.

The increased altitude request was denied because there was another plane flying at that height, he said."

Megaflow

9,522 posts

227 months

Monday 29th December 2014
quotequote all
Is it just me that's starting to think this is another MH370?

No mayday, no distress call, an area well covered by radar and and despite spending 36 hours searching a reasonably compact search, there is no sign of it.

AreOut

3,658 posts

163 months

Monday 29th December 2014
quotequote all
Megaflow said:
Is it just me that's starting to think this is another MH370?

No mayday, no distress call, an area well covered by radar and and despite spending 36 hours searching a reasonably compact search, there is no sign of it.
MH370 didn't have extremely bad weather, this plane went in a pitch black clouds...strange because captain had 20K hours of experience flying mainly through this same area.

Jimbeaux

33,791 posts

233 months

Monday 29th December 2014
quotequote all
kapiteinlangzaam said:
Pesty said:
This titbit was found on another forum. No link. Though.

"Air traffic control approved the pilot's request to turn left but denied permission for the plane to climb to 38,000 feet from 32,000 feet, Djoko Murjatmodjo, an aviation official at the Indonesian Transport Ministry, told the national newspaper Kompas.

The increased altitude request was denied because there was another plane flying at that height, he said."
Complete non-story.

I deny requests for climb (or descent) every day at work due to other aircraft being in the way.

IF the pilot thinks that the safety of the aircraft is in question, they can also ignore the ATC clearance and climb anyway....
I see pilots on the news speaking of computer-imposed limits on climb and descent to avoid accidental encroachment into other flight paths, not able to be overridden by the pilot. If this is so, might it have inhibited the pilot from climbing out of the weather?

djc206

12,499 posts

127 months

Monday 29th December 2014
quotequote all
Jimbeaux said:
I see pilots on the news speaking of computer-imposed limits on climb and descent to avoid accidental encroachment into other flight paths, not able to be overridden by the pilot. If this is so, might it have inhibited the pilot from climbing out of the weather?
I think you're referring to TCAS/ACAS and that's not how it works, it actually requires pilot input it doesn't have independent control of the aircraft. Hopefully one of our resident Pilots will be along soon to explain the ins and outs.

Shaoxter

4,105 posts

126 months

Monday 29th December 2014
quotequote all
Pesty said:
This titbit was found on another forum. No link. Though.

"Air traffic control approved the pilot's request to turn left but denied permission for the plane to climb to 38,000 feet from 32,000 feet, Djoko Murjatmodjo, an aviation official at the Indonesian Transport Ministry, told the national newspaper Kompas.

The increased altitude request was denied because there was another plane flying at that height, he said."
Possibly a silly question but why didn't ATC just say there's a plane at 38,000ft but you can fly at 37,000 or 37,500ft?

djc206

12,499 posts

127 months

Monday 29th December 2014
quotequote all
Shaoxter said:
Possibly a silly question but why didn't ATC just say there's a plane at 38,000ft but you can fly at 37,000 or 37,500ft?
Well the last image of it on radar and flight radar had it at FL363 so presumably it had been cleared up. Minimum separation is 1000ft in RVSM airspace if correctly equipped.

djc206

12,499 posts

127 months

Monday 29th December 2014
quotequote all
kapiteinlangzaam said:
Because ATC is a slightly complicated environment hehe

They would never approve 37500ft, as thats less than the prescribed minimum vertical separation....

If the controller said no, theres a reason.

Having said that, the pilot DID climb, as the last radar contact was passing FL363 (36,300ft std. altitude).

The ATC stuff is a NON story.
24 hour news trying desperately to find something to report