While there is a theory that this is possible, nobody has been able to demonstrate being able to recover significant amounts of data.

What is the T7 range speed? It would not be 'thereabouts'; it is either 0.84 or it isn't.

The speed of 450 kts groundspeed predicates a constant wind iro 60 kts head wind assuming an OAT of -40C and my memory and calculation being correct which give a TAS of 510.

@A69 could you please provide us with the official source/weblink of the "AAIB summary" ?

Regarding the yellow and the red track on the aaib image/globe.

- Yellow represents the solution which covers the greatest distance, red the solution for smallest distance?
- Yellow is great circle, red is constant magnetic heading?

Together with the search areas that points to great circle solution, i.e. FMC and not to A/P => deliberate action?

Edit: Thinking about it, there could be a solution with 450 knots and constant magnetic heading which is much closer to the yellow track => deliberate action not confirmed

ionagh; with respect (and I mean that) your proposal is not proof against tampering or catastrophic failure of the a/c

A fiber optic cable run from the AIMS unit to a internal hull mounted data exchange/charging/monitoring device constantly updating the external EPIRB/data recorder would provide a truly independent resource for SAR/AAIB people. No CVR snooping either.

It wouldn't need ED-12 certification as total failure would not affect the a/c

(yes, I did look it up)

ED-12B
Software Considerations in Airborne Systems and Equipment Certification
Latest Revision December 1, 1992

Ole ole, looks like it.

It also looks like the green track on the graphic I put together, the western route using a constant magnetic hdg, as suspected, does not match any track which would correlate with the hourly satellite pings.

Yes, It's on the facebook page of Ministry of Transport Malaysia.
Here's the link https://www.facebook.com/permalink.p...78566888854999

In the doppler shift diagram there are three bursts close to where MH370 turned south between ~ 18:20 -18:30 utc. If that is not just symbolic, it would indicate turning south happened in that time window.

- Why three burst in such a short time?
- And wasn't last PSR contact at 18:40 utc (2:40 MYT)?

Inmarsat Pings
 

BBC are reporting a final partial Inmarsat handshake ping received at 08:19 following the routine handshake received at 08:11 with no explanation. I'm not familiar with 777 systems, but could this have resulted from a transient power interruption during bus transfer following the loss of a genny?

Small objects, and objects that that are floating "high", will be subject to surface drift, the wind and wave derived motion of the uppermost layer of sea water, which is typically in the direction of the surface wind and should be applied after allowance is made for the current. In an areas such as the one under consideration, the surface drift can be quite fast.

Capt Kremin

Actually on second thought I think we still don't have enough data to jump to conclusions. The aaib tracks mark just the two extreme possibilities. There might as well be a constant magnetic heading solution with a higher speed and a more westward heading than the red track. That would end up much closer to the great circle (yellow) solution.

could it be engine wound down no gennies, rat came on then satcom tried to fire up

ie does rat power satcom for an expected acars report (even though they don't subscribe), but that wouldn't explain just a partial ping unless it hit the water at that point.

This was my exact suggestion few posts before:

Is the Inmarsat comms device on RAT at all?

Inmarsat
 

The inmarsat information with logon/logoff probes pretty well confirms that MAS was an active customer. No network provider would be probing non-customers in this way.

I had picked up the no sat contract from a very early post, but this clearly was wrong.

Inmarsat Calculations
 

Some more information on the Inmarsat calculations:

http://i.imgur.com/vtNqkyN.jpg

http://i.imgur.com/1qn0Zep.jpg

Source

@A69 thanks for posting the AAIB report and charts. Assuming the blue dots on the “Measured Data” chart are actual points of measurement for the burst frequency offset analysis (as implied), the satellite and aircraft would appear to have communicated more often than had previously been thought – i.e. at (roughly) the following times:

0042L
0055L
0107L

0225L
0227L
0228L

0340L
0440L
0540L
0640L
0811L
0819L (partial)

It would be interesting to know what prompted the comms between 0225L and 0230L.

No I don't agree. From various news sources (Google MAS satellite contract) MAS didn't have the contract to continuously transmit its position and other continuous data (ala AF447) via ACARS satellite data (in order to save about 10usd/flt), but they retained the the ability to transmit data via satellite on a request basis. For example to request weather or contact ops in an emergency, or when using CPDLC. Without the satellite connection the aircraft wouldn't be able to use CPDLC when outside of VHF range, and I know they were able to do that.

To turn off the ACARS data transmission you have to go into the com's page on center console, and perform the four step process to actually turn it off. Simply moving the VHF 3 radio head out of the data mode won't do it.

no sat contract FOR Acars. not no sat contract, even if transmitted by aircraft not accepted by satellite

"BBC are reporting a final partial Inmarsat handshake ping received at 08:19 following the routine handshake received at 08:11 with no explanation".

Flame out.
RAT deployed.
SATCOM Packs ( are ON/RUN) provides the last (new) "handshake".

IF the report is actually correct.

We`ve heard,that the Pilot was separated from his wife,but still living under the same roof.
Do we know, who was the force behind this separation ?
Maybe it was his wife and the pilot still hoped to reconcile.Wè`ve heard she left him just the day before that flight.If, and it is of course a big "if"this affected him really strongly it could have triggered a suicide situation.