Pakar penerbangan berkata pesawat Air Asia Indonesia QZ8501 dari Surabaya ke Singapura yang hilang pagi semalam telah terbang pada kelajuan 100 knot atau 185 km/j, satu catatan kelajuan yang rendah dari sepatutnya sebelum ia hilang.
Geoffrey Thomas dari airlineratings.com memberitahu BBC bahawa data yang dicatatkan oleh radar menunjukkan pesawat terbang pada kelajuan 353 knot (653 km/j). Dia menambah bahawa walaupun ianya sekadar spekulasi, adalah mungkin untuk juruterbang kehilangan data kelajuan jika alat tiub pitot yang mengukur halaju dalam udara, membeku.
Hal ini terjadi pada pesawat Air France Airbus 330 yang terjunam ke Lautan Atlantik pada tahun 2009.
A flights expert said the missingAirAsia plane was flying 100 knots (nautical miles per hour) slower than it should have been when it vanished.
Geoffrey Thomas, of airlineratings.com, told the BBC that radar plots showed the plane was flying at 353 knots.
Thomas said that although it was only speculation, it was possible the pilots may have lost air speed data because pitot tube instruments (which measure air speed) may have become iced up.
This is what is thought to have had happened when an Air France Airbus A330 crashed over the Atlantic Ocean in 2009, the BBC reports.
AirAsia group has had no previous fatal accidents involving its aircraft.
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