Malaysian 777 missing
03-18-2014, 10:56 AM
#641
Gets Weekends Off
Joined APC: Mar 2014
Posts: 281
Actually it is neither well-played or funny. The aircraft was a Cessna 337D, N2685S, that crashed on 4/1/1997. The FBO had requested that an industrial gas supplier set up a servicing unit. The gas company agent was used to dealing with fire departments and checked the wrong box, even though his company could have supplied aviators breathing oxygen. The bottles on the servicing dolly were painted a dark green, not the apple green used for oxygen bottles. After the accident several pressurized turboprop and turbojet were grounded until their bottles could be correctly serviced.
03-18-2014, 11:06 AM
#642
Gets Weekends Off
Joined APC: May 2010
Posts: 342
Originally Posted by forgot to bid
Alright, I have to ask this again about the ELT. Wouldn't a B777 in 2014 have a 406mhz ELT on it?
If it crashed then the ELT would have been activated by impact and within a minute an encoded digital message to a satelite saying the ELT's ID/aircraft ID, country code and coordinates. I've seen it work.
If it crashed then the ELT would have been activated by impact and within a minute an encoded digital message to a satelite saying the ELT's ID/aircraft ID, country code and coordinates. I've seen it work.
And I'd postulate that other than a more-or-less-vertical dive into the ocean, said ELT would activate and be received until the hull sank.
03-18-2014, 11:17 AM
#643
With The Resistance
Joined APC: Jan 2006
Position: Burning the Agitprop of the Apparat
Posts: 6,191
Originally Posted by forgot to bid
Alright, I have to ask this again about the ELT. Wouldn't a B777 in 2014 have a 406mhz ELT on it?
If it crashed then the ELT would have been activated by impact and within a minute an encoded digital message to a satelite saying the ELT's ID/aircraft ID, country code and coordinates. I've seen it work.
If it crashed then the ELT would have been activated by impact and within a minute an encoded digital message to a satelite saying the ELT's ID/aircraft ID, country code and coordinates. I've seen it work.
CNN seems to think there are elt buoys that pop out, maybe they have been watching too many submarine movies.
03-18-2014, 11:40 AM
#644
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Joined APC: Mar 2014
Posts: 281
Eastern ATC may have a point. In a lot of crashes the coaxial cable from the ELT to the fuselage mounted skin gets severed. The unit works fine after the crash but there is no antenna connection, so transmission is only for a few hundred feet, if that. In a water crash that is not too severe one second or so of ELT transmission before the cable is severed would not be out of the ordinary. If the aircraft hit a vertical rock face on a peak in Tibet, then no.
03-18-2014, 11:50 AM
#646
Gets Weekends Off
Joined APC: Jun 2009
Posts: 5,113
Originally Posted by savall
The amateur air crash investigators are really upping their game this week.
So I read that the plane snuck up on Diego Garcia, with the intent of refueling it, and moving onwards.
Brilliant!
03-18-2014, 12:00 PM
#647
Line Holder
Joined APC: May 2013
Position: Fire Lieutenant
Posts: 50
Originally Posted by F4E Mx
Actually it is neither well-played or funny. The aircraft was a Cessna 337D, N2685S, that crashed on 4/1/1997. The FBO had requested that an industrial gas supplier set up a servicing unit. The gas company agent was used to dealing with fire departments and checked the wrong box, even though his company could have supplied aviators breathing oxygen. The bottles on the servicing dolly were painted a dark green, not the apple green used for oxygen bottles. After the accident several pressurized turboprop and turbojet were grounded until their bottles could be correctly serviced.
I am not aware of any difference between medical O2 and what is carried in crew bottles. It is all Oxygen. What we use at work is indeed simply compressed room air. Introducing 100% O2 to a fire situation has a fairly......negative effect.
03-18-2014, 12:08 PM
#648
Flies for Fun
Joined APC: May 2012
Position: CE-172 Heavy
Posts: 358
Originally Posted by gdube94
I stand corrected, had not heard of that accident before. I'd be interested to read that report.
I am not aware of any difference between medical O2 and what is carried in crew bottles. It is all Oxygen. What we use at work is indeed simply compressed room air. Introducing 100% O2 to a fire situation has a fairly......negative effect.
I am not aware of any difference between medical O2 and what is carried in crew bottles. It is all Oxygen. What we use at work is indeed simply compressed room air. Introducing 100% O2 to a fire situation has a fairly......negative effect.
03-18-2014, 12:25 PM
#649
Gets Weekends Off
Joined APC: May 2010
Posts: 342
Originally Posted by gdube94
I stand corrected, had not heard of that accident before. I'd be interested to read that report.
I am not aware of any difference between medical O2 and what is carried in crew bottles. It is all Oxygen. What we use at work is indeed simply compressed room air. Introducing 100% O2 to a fire situation has a fairly......negative effect.
I am not aware of any difference between medical O2 and what is carried in crew bottles. It is all Oxygen. What we use at work is indeed simply compressed room air. Introducing 100% O2 to a fire situation has a fairly......negative effect.
03-18-2014, 12:25 PM
#650
Gets Weekends Off
Joined APC: Mar 2014
Posts: 281
The accident report is on the NTSB.gov web site. You can search by registration number. There is even a difference between medical oxygen and 'aviators breathing oxygen'. Both are 100 percent oxygen but the moisture content in the aviators oxygen is more tightly controlled.
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