Malaysia Airlines 777 missing

I just wanted to mention real quick to @MikeOH58 that if you were at 454KIAS at FL400 or whatever you'd be very well through Mach. I think you are getting at 454 KTAS.

No sir, KIAS. That was kind of the point. If you are doing 454 KIAS @ FL4 zero whatever, you are likely shedding parts. 454 KTAS? Sure, fast for a CJ3 guy like me, but i'm sure in absolutely no way dangerous or out of the norm even.
 
No sir, KIAS. That was kind of the point. If you are doing 454 KIAS @ FL4 zero whatever, you are likely shedding parts. 454 KTAS? Sure, fast for a CJ3 guy like me, but i'm sure in absolutely no way dangerous or out of the norm even.
Well then I suppose we are saying the same thing. 454 KIAS is a bit extreme of an example.
 
What!??
http://www.nytimes.com/2014/03/15/world/asia/malaysia-military-radar.html?hp&_r=0

"Investigators have also examined data transmitted from the plane’s Rolls-Royce engines that showed it descended 40,000 feet in the span of a minute, according to a senior American official briefed on the investigation. But investigators do not believe the readings are accurate because the aircraft would most likely have taken longer to fall such a distance."

Dirty little secret about data acquisition … sometimes, when the talker box on an ARINC 429 setup isn't sending valid data (such as when that box is turned off or it does not have sufficient inputs to produce a value because another box further upstream is not sending data), the listeners will substitute a square-wave-like pattern in lieu of a valid signal (such as an FDIU/ACMS data acquisition unit or EHM box). I wonder if that's the source of the wildly-varying values reported by the Rolls-Royce boxes; an "No Computed Data"-square wave. Much of the 777 data buses are actually ARINC 629, but I think(?) the same concepts apply.

It must be a frustrating situation for RR to be in; they probably feel a compulsion to report exactly what they see in the data when saying anything, but any censoring or editorializing gets filtered as NOT-FACTUAL or SPECULATION.
 
Had to repost from another forum, at the extreme end of theories.....


Iran's Trojan Horse

The pilot's wife and 2 kids were kidnapped and the pilot was contacted via his cell 15m before takeoff with pics of his family, tied up, gagged, with knives to their throats by masked bad guys. He was given instructions to turn off the transponder, turn to the west, and allow the 2+ Iranian terrorists (fake passports) into the cockpit.
Immediately prior, the two terrorists removed a 250W High Power Waterproof OEM Signal Jammer with Omni-directional Antennas from their overhead luggage and activated it, effectively jamming all cell phone transmissions.

The plane was directed to fly west across Malaysia and then redirected north to Myanmar's (Burma) Hanthawaddy International Airport in the Bago Region; Myanmar which is located about 50 miles (80 km) away from Yangon. This is a remote airstrip that was under construction and not expected to be opened until 2018; however, which was controlled by Syrian Islamists.

The plane landed without incident and was taxied to a hanger under contruction where it was boarded by more Islamists with fully automatic weapons, including a highly trained Iranian Military pilot and 3 member flight crew. The Maylasian pilot and crew were taken outside and executed in a manner visible to the passengers. The pilot's wife and kids were simultaneously killed and subsequently buried in a remote field after the plane landed.
The plane's communication electronics were completely disabled (turned off the satellite transmissions that tipped off authorities that the plane had not crashed and in fact this oversight was reported in the news). Once this was completed, the plane lifted off and turned to fly south across the Bay of Bengal and around the tip of India... then turned northwest over the Arabian Sea enroute to Iran. The plane was subsequently landed at Gonbad-e Qabus airport (also underconstruction) in the north eastern section of Iran.

The hostages were moved to a remote prison to be held indefinitely.

The plane was stripped of all Malaysian air identification and paint. It was then repainted to the specs of an Turkish Airlines 777 plane. The plane was retrofitted with military grade electronics (including electronic countermeasures (ECM) and radar warning (RWR) systems, chaff/flare dispensers; all pulled from a retired F14 Tomcat based in Iran from 2003). Additionally, the jet was equipped and armed with a fully operational nuclear bomb from Iran's now functional nuclear weapons program using the 240 pounds of 84% enriched Uranium from Natanz. This device was expected to produce a yield of 22 kiloton (40% bigger than Little Boy) and have an effective blast radius of 4.5 miles.

Only April 14th, the Islamists bribed a local official at Trabzon (TZX) Turkey to enable the swapping of the Turkish Airlines TK 2837 airplane with the nuke equipped 777 that will now utilize the transponder from 2837.
The plane departed TZX and skipped the scheduled landing in IST. Upon arriving near JFK, the plane's transponder was turned off and rapidly descended to 5000 feet with ECM activated... The FAA repeated the same mistake from 9-11 and doesn't notify NORAD about this anomoly as they investigated the details of the missing flight TK 2837. The plane turned southwest and proceeded across Philadelphia and towards the ultimate destination of Washington DC, where 4 F16's are scrambled from the 1st Fighter Wing at Langley Air Force Base.
As the fighters approach flight TK 2837, they noticed the ECM pod below the left wing of the 777 and declared the flight hostile. NORAD confirms via Presidential WH hotline that VP Joe Biden had authorized the shoot down of the 777. As the fighters engaged for a AIM-9 Sidewinder missile shot, the Iranian pilot deployed the chaff & flares causing the missile to miss... by this time the flight was within 3 miles of Washington DC... The pilot activated the trigger mechanism on his flight stick to the nuclear device causing an immediate detonation almost twice the size of the bomb dropped on Hiroshima causing catastrophic damage across Washington DC and the eastern seaboard.
The End of the World as we know it and the beginning of WW III...


Remember in MIB when the tabloids were TRUE... This!
 
Dirty little secret about data acquisition … sometimes, when the talker box on an ARINC 429 setup isn't sending valid data (such as when that box is turned off or it does not have sufficient inputs to produce a value because another box further upstream is not sending data), the listeners will substitute a square-wave-like pattern in lieu of a valid signal (such as an FDIU/ACMS data acquisition unit or EHM box). I wonder if that's the source of the wildly-varying values reported by the Rolls-Royce boxes; an "No Computed Data"-square wave. Much of the 777 data buses are actually ARINC 629, but I think(?) the same concepts apply.

It must be a frustrating situation for RR to be in; they probably feel a compulsion to report exactly what they see in the data when saying anything, but any censoring or editorializing gets filtered as NOT-FACTUAL or SPECULATION.
Thank you. Dealing with null or unexpected values is a classic programming issue. Also, there is a big difference between how something works and how it is logged.

I wish I had more information about the ACARS data logging, as opposed to how ACARS works, in general.

I'm reminded of the Patriot missile software problem that went undetected for years. Did the crash of this aircraft result in unexpected data values that weren't parsed in any meaningful way?

Think about this, we are using engine performance data acquisition software to try and determine an aircraft's flight duration or location. That sounds like a stretch right off the bat. If an aircraft is parked, crashed, or not transmitting, what is the value of null data? Why would programmers go out of their way to accurately log things that are of no benefit to the engine manufacturer? I think there might be problems with the ACARS data that is fueling this frenzy.
 
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Dude,-Wheres-My-Car-movie-poster.jpg
 
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Vd (well, actually Md at that altitude) has to be greater than .8*Mc. Boeing lists Mc for the 777 as .84. So per Part 25 certification the Md number had to be at least 1.05 mach.

That makes no sense though. @Minuteman or @jynxyjoe what I am calculating incorrectly. Ref 25.335.

You didnt read down far enough. Look at 25.335 b (II). It talks about compressibility and the minimum that Md has to be above Mmo. If I recall right Md on a 777 is M 0.94. I have been at Md on the 737, 757, 767 and 777. These are very difficult to get to. It takes full power, and at least -10 degrees nose down to get to. The drag rise is very high.
 
Evidence, or reports about the possibility of evidence?

It could certainly be a hijacking, but if the ACARS data turns out to be erroneous, what do we really have?

After they lost SSR, how did they determine that the aircraft reversed course and over-flew Malaysia? Somebody, a day or two later, reported they might have seen an unknown radar contact that could have been the 777 ... or something else ... but they don't have "tape" of it.

The transponder turned off and the plane reversed course and flew for 5 hours based on Pings ID'd by the Satellite Company that receives the data even with transponder turned off. USA has strong evidence that plane is at the bottom of the Indian Ocean.
 
I've avoided much of the cable news until today, having received a lot of information from this site and others.

What this situation drives home for me--as do all aviation incidents--is that the media is so grossly inaccurate. In the course of an afternoon I've seen two idiots on CNN in a 777 cockpit procedures trainer, Dame Mary Schiavo, various "security experts," and Les Abend spouting a level of nonsense significantly below anything we'd all come up with in a bar after a few stiff drinks.

They're all grossly speculating and presenting said speculation as fact. Much of it is technically inaccurate. I can see through it because this is my career and I can decipher fact from fiction.

What blows my mind is that if this is how they treat this news event, it stands to reason that it's how they treat ALL news events. We all know they're 90% full of it on this one. How about the topics we're less educated on? Such a disappointment. Not a surprise, just a disappointment.
 
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The transponder turned off and the plane reversed course and flew for 5 hours based on Pings ID'd by the Satellite Company that receives the data even with transponder turned off. USA has strong evidence that plane is at the bottom of the Indian Ocean.
Please respond to my post. In the absence of the ACARS data, which is still being parsed and interpreted, what evidence do you base your opinion on?
 
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