Communications:SATCOM Logs

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Data Communication Logs

The Data Communication Logs provide a record of satellite communications to and from the aircraft 9M-MRO (Flight MH370) via the service provider Inmarsat.

Prior to releasing the Logs, Inmarsat and the Department of Civil Aviation (Malaysia) released a Joint Press Statement on Tuesday, 20 May 2014.

The logs were released by the Department of Civil Aviation (Malaysia) on Tuesday, 27 May 2014 in conjunction with a Media Statement 27 May 2014.

Inmarsat released an update in December 2014 with two additional lines that contain BTO and BFO data prior to 1600 UTC while 9M-MRO was powered-up at the gate in Kuala Lumpur.

Calculations using BFO and BTO values provided guidance to the Search for MH370.

The original document in .pdf format has been converted to text and, for ease of navigation, separated into sections which are accessed from Menu above.

For quick reference, Key Observations have been included.