American Airlines Group Inc.

(NASDAQ:AAL) is reportedly reorganizing its senior leadership team as CEO Robert Isom added a former Spirit Airlines executive to the senior management team amid surging fuel costs and gaps between the airline and rivals like Delta Air Lines Inc.

(NYSE:DAL) and United Airlines Holdings Inc.

(NASDAQ:UAL).

An Overhaul in Senior Management According to a staff memo obtained by Reuters on Wednesday, Isom acknowledged that there was a "meaningful gap" between American's current operational execution and where the company ought to be.