Abstract
At 17:22 UTC on 7th March 2014 Malaysian Airlines flight MH370 carrying 239 passengers and crew from Kuala Lumpur to Beijing lost contact with Air Traffic Control and was subsequently reported missing. Over the following days an extensive air and sea search was made around the last reported location of the aircraft in the Gulf of Thailand without success. Subsequent analysis of signals transmitted by the aircraft's satellite communications terminal to Inmarsat's 3F1 Indian Ocean Region satellite indicated that the aircraft continued to fly for several hours after loss of contact, resulting in the search moving to the southern Indian Ocean. This paper presents an analysis of the satellite signals that resulted in the change of search area.
Highlights
IntroductionDuring the search for MH370 information derived from the analysis of satellite signals was released over a period of weeks as the investigation progressed
This paper aims to shed some light on the way the analysis progressed over time, narrowing down the target search area at each iteration
Applying the Burst Frequency Offset (BFO) calculation to the original northern and southern routes produced the curves shown in Figure 9, which were published by the Malaysian authorities on 25 March 2014 and used to justify the southern route and the loss of the aircraft
Summary
During the search for MH370 information derived from the analysis of satellite signals was released over a period of weeks as the investigation progressed In some cases this information may have appeared confusing or contradictory, in a situation where time is critical the early release of preliminary results followed by more detailed refinements is generally more useful than waiting for the completion of a comprehensive analysis. MH370, a Boeing 777-200ER aircraft registration 9M-MRO, was equipped with a satellite communications terminal that used the Inmarsat Classic Aero system.
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