DALLAS (October 2, 2012)--Passenger seats on a third American Airlines flight came loose during flight and the airline says it's continuing to inspect other jets with similar seating.
The airline acknowledged Tuesday that seats came loose on a flight last week between Vail, Colo., and Dallas-Fort Worth International Airport.
The same thing happened on a flight Saturday and another on Monday.
Improperly installed clamps caused seats to come loose on some planes, and American is expanding an inspection to cover dozens of jets, the airline said Tuesday.
American said the problem was caused by improper installation of a clamp used to attach each row of three seats to tracks on the aircraft floor.
The airline had planned to inspect eight of its Boeing 757 jets, but says instead it has already inspected 36 and plans to check 11 more, all of which have the same model of seats in the main cabin.
The planes involved in the Saturday and Monday incidents were recently worked on at an American Airlines maintenance base in Tulsa, Okla., and at a Timco Aviation Services facility in North Carolina.
Timco has declined to comment.