With incorrect information, inadequate facts or the absence of hard data for MH370  … it’s hard to ascertain the truths of the matter and/or the truths of the matter cannot be ascertained fully.

For example, IF the last words of “All right, good night” sign-off by the co-pilot had happened after either the ACARS or transponder
had been deliberately switched off, coupled with a subsequent change of flight path, then the decompression of the plane as suggested by  http://goo.gl/OQb6ni can’t be the reason.

However if the last words by the co-pilot were before the ACARS and transponder were inactivated, then it’s possible that a fire might have broken out on the aircraft shortly after last contact was made with air traffic control (according to views of experienced pilots, the main reasons for transponder to be shut-off on purpose by a pilot was due to smoke, fire or electrical fire); or a major structural failure had occurred. The plane was in distress and the pilot then made a sharp left turn and attempted to return to a Malaysian airport in Langkawi.  Here is a perspective from a veteran pilot of what possibly could had happened to MH370 … http://goo.gl/ZZJcks

Background info… ACARS and the sequence of events before the air turn back.

Quote: Fr @MAS ..MH370 PRESS CONFERENCE – 18/03/14 clarifies that it cannot determine when ACARS had been disabled, only that it occurred within a specific time range: from 01:07 – approximately when the aircraft reached the east coast of peninsular Malaysia, and the last ACARS transmission occurred – to 01:37, which was the next scheduled reporting time.

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Officials later have revealed a new timeline suggesting the final voice transmission from the cockpit of the missing Malaysian plane may have occurred before any of its communications systems were disabled; adding more uncertainty about whom aboard might have been to blame.

Malaysian Airlines CEO Ahmad Jauhari Yahya said an initial investigation indicated that the last words heard from the plane by ground controllers – “All right, good night” – were spoken by the co-pilot, Fariq Abdul Hamid.  Malaysian officials said earlier that those words came after one of the jetliner’s data communications systems – the Aircraft Communications Addressing and Reporting System – had been switched off, suggesting the voice from the cockpit may have been trying to deceive ground controllers.

On Saturday, Mar 15.. the Malaysian PM stated that–

“Based on new satellite information, we can say with a high degree of certainty that the Aircraft Communications Addressing and Reporting System (ACARS) was disabled just before the aircraft reached the East coast of peninsular Malaysia. Shortly afterwards, near the border between Malaysian and Vietnamese air traffic control, the aircraft’s transponder was switched off.”

These findings were drafted together with representatives from the lead international investigators, based on the information available at the time.” Unquote.

New data verified MH370 changed course-so can’t be decompression. FAA,NTSB,AAIB &Malaysian.. confirmed course http:/…http://goo.gl/PZZ5ao @ckw09  Mar 15

A November 2013 FAA Airworthiness Directive for the 777. Some one wrote his thoughts here… http://goo.gl/OQb6ni @ckw09  Mar 13

Moments of great ordeal for families connected to MH370. http://goo.gl/HcI16B  http://goo.gl/C5NHkm  @MAS ..sole TwitterAc4Malaysia Airlines. @ckw09  Mar 11