Communications:SATCOM Logs/Appendix 2

MH370 DECODED
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Malaysia Airlines Flight MH370 Satellite Communications

Return to Communications



Key Observations


Analysis


SATCOM Logs

Notes


Pre Take Off


Post Take Off


Appendix 1


Appendix 2


Appendix 2


Messages extracted between 23:14:01 and 23:15:03 above to ease reading


Date Time UTC Channel Name Ocean
Region		 GES ID
(octal)		 Channel
Unit ID		 Channel Type SU Type Burst
Frequency
Offset
BFO (Hz)		 Burst
Timing
Offset
BTO
micro-
seconds
7/03/201423:14:01.196IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test217 
7/03/201423:14:01.215IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:01.378IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:01.386IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test216 
7/03/201423:14:01.554IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:01.554IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test216 
7/03/201423:14:01.697IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test216 
7/03/201423:14:01.745IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:01.878IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:01.903IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test216 
7/03/201423:14:02.025IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:02.049IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test216 
7/03/201423:14:02.196IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Test216 
7/03/201423:14:02.215IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:02.378IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:02.386IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:02.527IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Test 
7/03/201423:14:02.532IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:02.697IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:02.888IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:03.071IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge217 
7/03/201423:14:03.196IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:03.386IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:03.531IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:03.696IOR-3737-21000IOR3056C-Channel RX0x60 - Telephony Acknowledge216 
7/03/201423:14:07.905IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Status Report 
7/03/201423:14:08.696IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Status Report220 
7/03/201423:14:17.878IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Status Report 
7/03/201423:14:18.697IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Status Report218 
7/03/201423:14:27.878IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Status Report 
7/03/201423:14:28.696IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Status Report222 
7/03/201423:14:37.905IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Status Report 
7/03/201423:14:38.696IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Status Report220 
7/03/201423:14:47.878IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Status Report 
7/03/201423:14:48.696IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Status Report220 
7/03/201423:14:57.878IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Status Report 
7/03/201423:14:58.696IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Status Report218 
7/03/201423:15:00.378IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:00.532IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:00.750IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:00.878IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:00.907IOR-P10500-0-386BIOR30510P-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:01.025IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:01.197IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Channel Release218 
7/03/201423:15:01.224IOR-3737-21000IOR3056C-Channel TX0x30 - Call Progress - Channel Release 
7/03/201423:15:01.386IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Channel Release217 
7/03/201423:15:01.532IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Channel Release219 
7/03/201423:15:01.697IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Channel Release219 
7/03/201423:15:01.886IOR-3737-21000IOR3056C-Channel RX0x30 - Call Progress - Channel Release217 

Source: MH370 Data Communication Logs, Inmarsat and DCA Malaysia. May 2014, updated in December 2014

Disclaimer

Satellite communication data to/from MH370 captured by Inmarsat and redacted for public reference by Inmarsat and the Department of Civil Aviation (Malaysia) was made available as a .pdf file (Portable Document Format) and is referred to as the MH370 Data Communication Logs.

To present the MH370 Data Communication Logs here, the data has been extracted from the .pdf file and reformatted using HTML. This enables hyperlinks to be added.

Although every effort has been made to ensure the content is the same as the original Inmarsat/DCA version, readers and researchers intending to perform calculations or quote the data are advised to locate an original file.


Coordinated Universal Time

Ground earth station. A satellite ground station sends or receives data from orbiting satellites. (Source: ATSB)

Identification

Burst frequency offset. BFO is a measure of the difference between the expected frequency of a satellite transmission and the frequency received at the ground station. (Source: ATSB)

Burst Timing Offset. BTO is a measure of the time taken for a satellite transmission round trip (ground station to satellite to aircraft and back) and allows a calculation of the distance between the satellite and the aircraft. (Source: ATSB)

Indian Oceanic Region

Department of Civil Aviation (Malaysia)

withdrawn, hidden or removed (before publication)

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