NEW YORK (Reuters) - Boeing Co (BA.N: Quote, Profile, Research) said on Monday leasing company Aviation Capital Group made an order for 17 single-aisle 737s, worth more than $1 billion at list prices.

The order was previously accounted for on Boeing's online order book, attributed to an unidentified customer, Boeing said.

(Reporting by Bill Rigby, editing by Gerald E. McCormick)