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Malaysian Airlines MH370 contact lost

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Malaysian Airlines MH370 contact lost

Old 23rd Mar 2014, 11:20
  #7461 (permalink)  
 
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I'm of the view we are down to one of two options, either an extraordinary event which has not been managed well or perhaps was not possible to manage well.

OR

A Deliberate Act, and I don't believe for a minute the flight crew had anything knowingly to do with that, I'm thinking a lone perpetrator, either an employee or a very good friend of the Captain, someone who could be trusted and invited into the flight deck, a good friendship unsuspectingly established over a period of time, a friendship which was no coincidence.
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Old 23rd Mar 2014, 11:23
  #7462 (permalink)  
 
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Are YOU a pilot? At FL350 you wouldn't be instantly blue in the face and pass out... Do you KNOW how long it takes to don a quick-donning oxygen mask? It takes me two (2) seconds to pull the mask out of the slot with one swoop of my left hand and plant it on my face.
That's not my point, there was a chain of events that led to the Helios crew not donning their masks, and all I'm saying is that with the limited information at hand, depressurization is the most plausible scenario as it explains strange crew behaviour and strange flight path.

It may have been a hi-jacking or suicide but very unlikely IMO.
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Old 23rd Mar 2014, 11:31
  #7463 (permalink)  
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Time of useful consciousness at 35,000ft is not in seconds. For a start you have a lung full of air, CO2 and water vapour and that will see you OK for quite a time. I can't remember off the top on my head but we used to fly with cabin altitude at 39,000ftand you could certainly drop your mask to blow your nose. The rule changed above 40k and you were down to seconds. IIRC it was something like 20-30 seconds at 45k and you had to initiate a 5k/m descent with a minute. Higher still with considerable overpressure (and you would have had a mask on) you had 30 seconds to initiate the descent.
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Old 23rd Mar 2014, 11:36
  #7464 (permalink)  

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Anyone remember this?

New plastic garbage patch discovered in Indian Ocean | Coastal Care

Instead of running around like a bunch of schoolboys at a footbal match all wanting to have a kick of the ball, heading off for every bit of something a poor satellite photograph coughs up, why don't they fine search the programmed flight path and any viable diversion routes from the point of last contact?

When there's a problem with this size of ac, do the airline pilots disengage the autopilot and fly the ac manually !!! Or is the ap reprogrammed allowing the pilots to deal with the immediate problem?
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Old 23rd Mar 2014, 11:42
  #7465 (permalink)  
 
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Quick-donning mask

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Old 23rd Mar 2014, 11:42
  #7466 (permalink)  
 
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Originally Posted by Pontius Navigator
Time of useful consciousness at 35,000ft is not in seconds.
Hmmmm.....

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Old 23rd Mar 2014, 11:46
  #7467 (permalink)  
 
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Time of useful consciousness at 35,000ft is not in seconds. For a start you have a lung full of air,
A lung full of very thin air - after you've forcibly exhaled most of what was in there during depressurisation - leaving you with oxygen rich blood (relative to what is now in your lungs). O2 will start to flow the wrong way out of your blood stream. Every breath you take will blow more O2 out of your body until you lose consciousness.

Its not like holding your breath under water.

That said - you will still get more than just a couple of seconds @35K, 30 secs, 45??
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Old 23rd Mar 2014, 11:59
  #7468 (permalink)  
 
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The aircraft flew on in LNAV or HDG SEL and at the MCP/VNAV altitude. If in LNAV and passing over the last waypoint the mode changed to HDG HOLD
A perfectly valid scenario, and one that puzzled me hasn't been elucidated upon more.. rather than all of this obtuse deliberate zig zag stuff.
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Old 23rd Mar 2014, 12:01
  #7469 (permalink)  

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All of the reports of the route change having been deliberately pre-programmed into the flight computer.............DEBUNKED.
All of the reports of the change being made at least 12 minutes prior to the 1:19 "alright goodnight" last communication with ATC............DEBUNKED.
Anyone heard of RTE 2 or don't they have it on the T7? I wouldn't have thought that ACARS would show a route change until it has been executed.
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Old 23rd Mar 2014, 12:02
  #7470 (permalink)  
 
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Do we 'know' that the a/c zig-zagged along the FIR boundary (apart from the previous claim that those waypoints had been entered into the FMS?)
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Old 23rd Mar 2014, 12:04
  #7471 (permalink)  
 
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Whatever went wrong, went wrong quickly between 1:19 and 1:22.
And to those who dismiss the various hypoxia theories simply because the cabin altitude warning could not be ignored, there may have been a whole heap of other alerts and warnings going off at the same time.
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Old 23rd Mar 2014, 12:08
  #7472 (permalink)  
 
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Anyone heard of RTE 2 or don't they have it on the T7? I wouldn't have thought that ACARS would show a route change until it has been executed.
All Smiths (737 Classic and I assume later 737's) and Honeywell (757/767/777/744) FMC's have RTE 2.
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Old 23rd Mar 2014, 12:11
  #7473 (permalink)  
 
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Anyone know: How does EICAS prioritise cargo fire vs cabin alt warnings?
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Old 23rd Mar 2014, 12:14
  #7474 (permalink)  
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100%, thank you for the table, I was working from very old memory

Refuting 'seconds', as I was, I was meaning iro 5-15 rather than minutes, half to one
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Old 23rd Mar 2014, 12:20
  #7475 (permalink)  
 
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How often does a Malaysian 777 fly with only two pilots? Was the two crew flight an uncommon occurrence?
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Old 23rd Mar 2014, 12:23
  #7476 (permalink)  
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Two crew on a flight like the 370 is normal.
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Old 23rd Mar 2014, 12:28
  #7477 (permalink)  
 
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Lithium Batteries

Last nite Sky News UK (approx 2300z) carried piece where Malaysian official stated cargo included lithium batteries that were correctly loaded as Haz Goods. Expert said it was legal but should be made illegal onboard a/c due to dangers posed. Report only noted once & only on that network. Not being carried by any network today (on my TV anyway).Was it ? Tried doing search on here but nothing came up. Apologies if I have missed it.
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Old 23rd Mar 2014, 12:28
  #7478 (permalink)  
 
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maxnightstop, crew would prioritise these warnings, the warnings themselves appear on screen, latest warning on top, in red. Cautions and advisories would be below, in amber, each indented one character to the right.
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Old 23rd Mar 2014, 12:29
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Originally Posted by ZeBedie
How often does a Malaysian 777 fly with only two pilots? Was the two crew flight an uncommon occurrence?
Originally Posted by SOPS
Two crew on a flight like the 370 is normal.
Yes, but what percentage of MAS 777 flights only have two crew?

It could be a rare occurrence if most 777 flights are longer and shorter flights are done with other aircraft types.
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Old 23rd Mar 2014, 12:30
  #7480 (permalink)  
 
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Do we 'know' that the a/c zig-zagged along the FIR boundary (apart from the previous claim that those waypoints had been entered into the FMS?)
IMO, we don't really "know" much of anything after 1:21, apart from the satellite pings. Especially after this latest press release, I would treat the previous reports of zig-zagging along those waypoints with extreme skepticism.
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