“its” (l.8) refers to

“the biggest” (l.12) is

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America, Australia and Canada, which are surrounded either by oceans or rough wilderness are the most active proponents of satellite navigation for commercial aircraft.

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The automatic dependent surveillance broadcast would not have prevented the crash into the Atlantic, notwithstanding its technology which combines the precise position of the aircraft with data about its flight number, speed, direction as well as attitude.

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The word "ill-fated" (l.1) is synonymous with doomed.

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The word "wreckage" (l.5) refers to the remaining parts of something that has been wrecked.

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The wreckage exact location is already known.

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The aviation industry will have a 50% reduction in fuel consumption by 2020, thus cutting CO 2 emissions in half.

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Besides producing fewer greenhouse gases, a modern turbofan is about 80% quieter than 1960 jets.

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The word "rowdy" (l.5) is synonymous with quiet.