International SOS last month introduced an aviation safety ratings service that flags bookings on airlines deemed risky. Gwendoline Pichon de Vendeuil, group product director at the travel risk management firm, noted growing customer interest following several high-profile aviation incidents in the past year.

For travel management pros, the important thing is knowing the risks before travel occurs. Some companies address it by approving or banning airlines in travel policies and point-of-sale systems.

Small domestic airlines in remote regions are of particular concern, especially for energy and mining companies and others that send workers to far-flung locations . . .

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