Hey was I thinking, Is it possible that the cabin of MH370 lost oxygen without explosive decompression? Possible system malfunction? Maybe they were having electronic system malfunctions and started pulling buses and changed course for closest viable aerodrome but become overcome by hypoxia from a pressure system malfunction? This could explain the "okay, goodnight" message and later mumbled communication to japan airways from F/o as Hypoxia can do very strange things to brain. Any thoughts?

This is the FSX thread and anyway there is a thread in Hanger Chat that covers all this.

This is what I've been saying from the beginning.

 

Hook

Thank you for not answering my question.

Did you miss my reply?  I've been saying it was likely hypoxia from the very beginning.

Sorry hook, not directed at you. Is it possible of pressure malfunction without explosive decomp?

This is like the 6th thread on the subject! Threads are running over on hanger chat.   Yes your 'Theory' is  possible, just like the other 1000 out there..

 

You could have an issue with pressurization, however the EICAS should inform you

 

EICAS MSG - CABIN ALTITUDE

 

Level - Warning

 

Aural - Siren

I like the hypoxia theory because it's simple, explains some odd things, and doesn't require a conspiracy theory.

 

The following video shows what happens when the chamber loses pressure suddenly.  Not exactly how some people are describing "explosive decompression" and probably faster than what might happen on an aircraft depending on the size of the pressure hull breach.

 

 

This one is communications with ATC from a pilot experiencing hypoxia.  Notice in the background when the pilot is transmitting that there is an obvious warning siren, which seems to be ignored.

 

 

I'm looking for another one that was a documentary about an aircraft where the cabin alert was turned off by ground crew for a test and not noticed by the flight crew.  That aircraft had a door seal malfunction.  There was no alarm.

 

Hook

On October 25, 1999, a month after the American team rallied to win the 1999 Ryder Cup in Brookline, Massachusetts, and four months after his U.S. Open victory at Pinehurst No. 2, Stewart was killed in the depressurization of a Learjet flying from Orlando, Florida, to Dallas, Texas, for the year-ending tournament, The Tour Championship, held at Champions Golf Club in Houston that year. Traveling on a Monday morning, Stewart was planning to stop off in Dallas to discuss building a new home-course for the SMU golf program.^[24] The last communication received from the pilots was at 9:27 AM EDT, and the plane made a right turn at 9:30 AM EDT that was probably the result of human input.

At 9:33 AM EDT the pilots did not respond to a call to change radio frequencies, and there was no further contact from the plane. The plane was, apparently, still on autopilot and angled off-course, as observed by several U.S. Air Force (and Air National Guard) F-16 fighter aircraft^[25] as it continued its flight over the southern and midwestern United States. The military pilots observed frost or condensation on the windshield (consistent with loss of cabin pressure) which obscured the cockpit, and no motion was visible through the small patch of windshield that was clear.

National Transportation Safety Board investigators later concluded that the plane suffered a loss of cabin pressure and that all on board died of hypoxia as the plane passed to the West of Gainesville, Florida. A delay of only a few seconds in donning oxygen masks, coupled with cognitive and motor skill impairment, could have been enough to result in the pilots' incapacitation. The NTSB report showed that the plane had several instances of maintenance work related to cabin pressure in the months leading up to the accident. The NTSB was unable to determine whether they stemmed from a common problem – replacements and repairs were documented, but not the pilot discrepancy reports that prompted them or the frequency of such reports. The report gently chides Sunjet Aviation for the possibility that this would have made the problem harder to identify, track and resolve; as well as the fact that in at least one instance the plane was flown with an unauthorized maintenance deferral for cabin pressure problems.

According to a USAF timeline, a series of military planes provided an emergency escort to the stricken Lear, beginning with an F-16 from Eglin Air Force Base, about an hour and twenty minutes (9:33 EDT to 9:52 CDT – see NTSB report on the crash) after ground controllers lost contact. The plane continued flying until it ran out of fuel and crashed into a field near Mina, South Dakota, a town ten miles (16 km) west of Aberdeen, after an uncontrolled descent. The five other people aboard the plane included Stewart's agents Robert Fraley and Van Ardan, and pilots Michael Kling and Stephanie Bellegarrigue, along with Bruce Borland, a highly regarded golf course architect with the Jack Nicklaus design company.

Larry, your topic starter has gone over to Hangar Chat already!  

 

Ooops, looks like he's all over the place now!!!   :lol:

Edited March 25, 201412 yr by olli4740

This is like the 6th thread on the subject! Threads are running over on hanger chat.   Yes your 'Theory' is  possible, just like the other 1000 out there..

 

You could have an issue with pressurization, however the EICAS should inform you

 

EICAS MSG - CABIN ALTITUDE

 

Level - Warning

 

Aural - Siren

Why start a new thread for each of the individual theories and, just to be helpful, put them in the wrong section as well?

 

 

EDIT

 

And then improve the post by simply cut-and-pasting a Wikipedia item?

 

 

Why start a new thread for each of the individual theories and, just to be helpful, put them in the wrong section as well?

 

Gerry, you missed "didn't read the rest of the thread before posting" and "made a double post."  That's ok, I don't mind distancing a new thread from all the conspiracy theories.  I'm sure this one will get moved when a moderator notices it.

 

Hook

 

 

I'm looking for another one that was a documentary about an aircraft where the cabin alert was turned off by ground crew for a test and not noticed by the flight crew.  That aircraft had a door seal malfunction.  There was no alarm.

 

Hook

Hi Larry,

 

Sounds like you are talking about Helios 522, there was an alarm , the crew thought it was related to the take off config.

 

Do you have a link to the report on that Kalita 747? Have never heard of this incident for some reason.

 

Cheers

It shits me that Malaysian Airways wont release full cargo manifest as this fuels conspiracy fires.

 

Could the pressure have been set wrong on the overhead and they unkowingly gave themselves hypoxia, or a malfunction in this system?

Personally I think they were having some serious system/electric malfunctions which they were trying to negate and turned before becoming overcome by hypoxia. Maybe just enough lack of oxygen not to kill but pretty much incapacitate all on board, leading to confused radio comms and decision making. Also if the flight crew momentarily regained consciousness they could have changed flight level a few times.

 

 

On the B777 no pressure is set manually on the overhead. It's all automatic and related to entries in the FMC (which are double-checked at least).