In December 1994, the Federal Aviation Administration (FAA) grounded both ATR types in icy conditions following an American Eagle crash in October 1994, which claimed the lives of 68 people onboard.

When the RF stalls, the initial ssDNA signal activates ATR. Once activated, ATR kinase phosphorylates a variety of proteins to induce the replication checkpoint and promote RF stability.

Canadian hydroelectric provider Hydro-Quebec has ordered three ATR 72-600 turboprops, with deliveries set to start in September next year. ATR disclosed the order on 3 April, saying Hydro-Quebec ...