Boeing’s Smallest 737 Faces an Uncertain Future

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Boeing Co.’s smallest version of the 737 jetliner faces an uncertain future as Southwest Airlines Co., the carrier that championed the plane, focuses on larger models.

Southwest is talking with Boeing about switching some or all of its remaining 56 orders for the 737-700 to a version that seats 32 more passengers, Chief Operating Officer Mike Van de Ven said in an interview. The Dallas-based carrier last took delivery of a new -700 in 2011.