There’s a modestly-sized airline—87 planes—whose nonfuel costs are expected to swell some 9% to 12% this year, even as its unit revenues decline. For the first quarter of this year compared to the same period last year, its operating margin declined more steeply than almost any other airline worldwide. It’s losing several top executives, including its well-regarded chief operating officer. Its latest chief marketing officer was on the job for about two months. An expensive new pilot contract will add $30m to $35m in additional costs this year. Occasional stories about its safety record, coming not just from unions but…