Malaysian Airlines MH370 contact lost
Join Date: Mar 2014
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Could it be, that at the final moments of flight, at 0019utc, so well within the window of 0011 to 0115 utc, agreed to be the time of fuel exhaust, someone had circulated power (switch them all off for a while and then later switch SATCOMM back on) to try to alert the time of crash,
or was it effect of low power on fuel exhaust?
This could be a good indicator, that 0019 was the exact time of the final power failure.
or was it effect of low power on fuel exhaust?
This could be a good indicator, that 0019 was the exact time of the final power failure.
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.
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could it be engine wound down no gennies, rat came on then satcom tried to fire up
or was it effect of low power on fuel exhaustion?
This could be a good indicator, that 0019utc (08:10) was the exact time of the final power failure.
This could be a good indicator, that 0019utc (08:10) was the exact time of the final power failure.
Inmarsat
Quote:
MAS no satellite contract...
MAS no satellite contract...
I had picked up the no sat contract from a very early post, but this clearly was wrong.
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@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.
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.
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MAS no satellite contract therefore by your own statement the switching vhf to data would disconnect ACARS - agreed?
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.
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no sat contract FOR Acars. not no sat contract, even if transmitted by aircraft not accepted by satellite
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"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.
Flame out.
RAT deployed.
SATCOM Packs ( are ON/RUN) provides the last (new) "handshake".
IF the report is actually correct.
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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.Wč`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.
Do we know, who was the force behind this separation ?
Maybe it was his wife and the pilot still hoped to reconcile.Wč`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.
I don't own this space under my name. I should have leased it while I still could
Uplinker, IMHO the best visual search platform is already there - the Chinese IL76.
It has a fast transit speed, good slow speed performance, and what it lacks in electronic equipment is more than compensated by an incomparable lookout capability.
It has a fast transit speed, good slow speed performance, and what it lacks in electronic equipment is more than compensated by an incomparable lookout capability.
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Shifting responsibility?
Now that the crash site has (almost) been located inside Melbourne FIR, will the formal responsibility for the investigation be transferred to Australia?
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"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.
Flame out.
RAT deployed.
SATCOM Packs ( are ON/RUN) provides the last (new) "handshake".
IF the report is actually correct.
My theory is that a momentary loss of power to the SATCOM modem caused it to attempt to re-establish a connection with INMARSAT, which it was not powered for long enough to complete.
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aircraft to ship communication
Since this unfortunate incident, it occurred to me that if required to ditch in the open ocean I should easily be able to contact nearby ships, since then I decided to test the standard HF maritime emergency frequencies and have made continuous attempts to contact ocean going vessels as I fly directly over them in the Atlantic. I have tried several HF frequencies regarded as maritime emergency frequencies over the last 2 weeks without success. It would appear there is no set frequency that is "religiously" monitored as 121.5 on aircraft. Maybe this is something that needs some extra thought as a commercial airliner in distress should quickly and easily be able to communicate with ocean going vessels. it would be a shame to ditch alongside a vessel at night and watch it continue to steam off into the distance. 2182 kHz, 4125 kHz, 8291khz, 16590khz, 12290khz. Any advice?
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Most merchant ships ceased to carry radio officers and now have automated communications including email etc. HF is seldom used nowadays.
You would be much more likely to contact ships using the VHF frequency of 156.800 which is commonly known as Channel 16. This maritime radio equipment is not carried in any commercial aircraft I have flown but is fitted to some Naval helicopters and maritime patrol aircraft.
You would be much more likely to contact ships using the VHF frequency of 156.800 which is commonly known as Channel 16. This maritime radio equipment is not carried in any commercial aircraft I have flown but is fitted to some Naval helicopters and maritime patrol aircraft.
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distress call
Many posts ago, there was an unsubstantiated report that a US naval base in Thailand (Utapuo?) received a distress call with language like "cabin disintegrating".
What ever happened to this story?
Was it shown to be a hoax?
What ever happened to this story?
Was it shown to be a hoax?
Lapp, #8026:
Wrong attribution - it might help if you could actually verify who said what before posting :-).
My original post was in reply to James890 as follows, #7968:
James890:
Data remanence on CVR?
If they were still using magnetic tape, then there may be a chance to recover earlier recordings, much as overwritten hard drive data can sometimes be recovered if you have a right tools.
However, I would expect that modern cvr systems would record to flash or battery backed up memory. ie: digital rather than analog recording. Earlier contents would be overwritten in a continuous loop from the start of memory once end of memory is reached. There would be no way to recover data that has been overwritten...
To which CommanderCYYZ said in #7987 :
@syseng68k
It's actually much easier to recover data from over-written digital media. FBI software can recover data from digital media that has been over-written multiple times, or reformatted repeatedly.
Clearer now ?…
Wrong attribution - it might help if you could actually verify who said what before posting :-).
My original post was in reply to James890 as follows, #7968:
James890:
Data remanence on CVR?
If they were still using magnetic tape, then there may be a chance to recover earlier recordings, much as overwritten hard drive data can sometimes be recovered if you have a right tools.
However, I would expect that modern cvr systems would record to flash or battery backed up memory. ie: digital rather than analog recording. Earlier contents would be overwritten in a continuous loop from the start of memory once end of memory is reached. There would be no way to recover data that has been overwritten...
To which CommanderCYYZ said in #7987 :
@syseng68k
It's actually much easier to recover data from over-written digital media. FBI software can recover data from digital media that has been over-written multiple times, or reformatted repeatedly.
Clearer now ?…
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