A Northwest Airlines flight has had to make an emergency landing for a second straight day.

Airline spokesman Vin Parker says Flight 126 from Minneapolis to Chicago made an emergency landing in Madison, Wis., on Monday after the pilot noticed that gauges showed a loss of pressure on board.

None of the 115 passengers or six crew members aboard the DC-9 were injured.

She says passengers would be bused to Chicago.

A Northwest flight from Tampa, Fla., to Detroit made an emergency landing Sunday in Dayton, Ohio, when a computer for one of its engines failed. There were no injuries.