An admission request in H.323 Registration, Admission and Status (RAS) messages
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Automatic Repeat-reQuest, an error control mechanism for data transmission
The Zalingei Tarco Airlines Antonov An-24 crash occurred on November 11, 2010 when a Tarco Airlines Antonov An-24, registration ST-ARQ, was damaged beyond repair on landing at the dirt strip at Zalingei Airport, Sudan.