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United says using larger jets on 737 MAX routes is 'costing money'

CHICAGO, April 9 (Reuters) - United Airlines' use of larger aircraft on routes previously flown by Boeing Co's grounded 737 MAX jets is costing the carrier money in the short-term, President Scott Kirby said in a letter to employees seen by Reuters on Tuesday.

"Of course, we can’t keep this up forever," Kirby said, while noting that eligible employees will receive a one-time $100 bonus on April 17 despite an "unusually high number of headwinds thrown our way in the first quarter."

(Reporting by Tracy Rucinski Editing by Chizu Nomiyama)