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Posted

At 37,000ft at near Vne speed, flutter is a possibility if encountering clear air turbulence. Flutter can cause immediate wing separation or part of it. Air frame fatigue could induce flutter in an old airplane. Certification flutter tests are always conducted on a new air frame, never on an old high time plane.

José 

Posted

Aren't we jumping the gun just a bit? The wreckage has not been found yet and already the crazy theories are posted.

Clarence

Posted

I don't think terrorism is that crazy of a theory.  There have been terrorist attacks in the past against airliners an even with this airline so there is some precedent.

Posted

Way too early to make a call on this.  Lots of possibilities...blow out of a pressure bulkhead, uncontained engine failure, suicide by pilot, etc. etc.  I wouldn't rule out terrorism either.  

Posted

Something that always puzzle me is the location in the airframe of the data/voice recorders. They are inside the fuselage tail and will not float. Knowing from past accidents that it is hard and cumbersome to locate these boxes from the deep why they don't make them to float. The ELTs on boats just float out from their holding bracket when the boat sink. It would be fairly easy to encapsulate the recorders, ELT and strobe light in a conformal capsule attached to the vertical fin top. Upon impact the capsule would detach and float sending an ELT signal for easy locating. Instead of requiring a fleet of sonar sensors and submarines all would be required is a water scooter.

Now the recorders of 804 could very well be at 10,000 feet encrusted in mud with no chance of hearing the pin. Aside from the weak pin signal there is a lot noise in the ocean. On the Malaysia MH307 even the US Navy submarines could not find the boxes. And their sonars are suppose to detect stealth submarines. Trying to listen to that pin is like trying to hear it in a water drain in Wall Street from you standing in Central Park searching on foot.

José 

 

Posted
1 hour ago, Piloto said:

Something that always puzzle me is the location in the airframe of the data/voice recorders. They are inside the fuselage tail and will not float. Knowing from past accidents that it is hard and cumbersome to locate these boxes from the deep why they don't make them to float. The ELTs on boats just float out from their holding bracket when the boat sink. It would be fairly easy to encapsulate the recorders, ELT and strobe light in a conformal capsule attached to the vertical fin top. Upon impact the capsule would detach and float sending an ELT signal for easy locating. Instead of requiring a fleet of sonar sensors and submarines all would be required is a water scooter.

Now the recorders of 804 could very well be at 10,000 feet encrusted in mud with no chance of hearing the pin. Aside from the weak pin signal there is a lot noise in the ocean. On the Malaysia MH307 even the US Navy submarines could not find the boxes. And their sonars are suppose to detect stealth submarines. Trying to listen to that pin is like trying to hear it in a water drain in Wall Street from you standing in Central Park searching on foot.

José 

 

I heard some talk after Malaysia MH307 that the future "black box" should be an almost continuous uplink of flight recorded data to satellite.  Cloud based black box.

Posted

 It is deep where the crash site is, but I think the data recorders will be retrieved before long. Once that happens details leak out soon afterwards.

 

   It could be any of a number of things. It does seem like smoke was present for some reason/cause. As we all know, smoke onboard is very problematic.

Posted
On 5/21/2016 at 0:31 PM, aviatoreb said:

I heard some talk after Malaysia MH307 that the future "black box" should be an almost continuous uplink of flight recorded data to satellite.  Cloud based black box.

That would be nice, but how about two or more sets of batteries. The second set would take over once the first one is exhausted. All we see nowadays after an incident like this are countdown timers on days remaining on the battery. Two or three months worth of pinging would be nice.

Posted
28 minutes ago, flyboy0681 said:

That would be nice, but how about two or more sets of batteries. The second set would take over once the first one is exhausted. All we see nowadays after an incident like this are countdown timers on days remaining on the battery. Two or three months worth of pinging would be nice.

Yeah - that too.  I was thinking after the Malaysia flight - how ironic and what was probably going on with the one month battery.  That battery setup was probably certified in the early 70s and given difficulty and cost of certifying new technologies we all know that this sort of thing never gets done.  So there again, thank you to the difficult certification system for keeping simple upgrades out of the cockpit, all in the name of safety.

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