ATLANTA — The Federal Aviation Administration (FAA) is proposing a civil penalty of $700,000 against Executive Airlines, Inc., The San Juan, Puerto Rico airline, which does business as American Eagle Airlines, allegedly operated eight of its ATR-42 twin-turboprop airliners when they were not in compliance with Federal Aviation Regulations.

The FAA alleges that when Executive Airlines did heavy maintenance checks on its aircraft in 2007 and 2008, mechanics did not perform and document required, detailed visual inspections to detect possible cracks on the aileron center hinge bearing fittings. Executive Airlines operated the eight aircraft on 6,479 flights between the incomplete earlier inspections and September 26-27, 2008, when the company completed the proper inspections and procedures.

“All maintenance procedures must be followed at all times. There are no exceptions when it comes to safety,” said FAA Administrator Randy Babbitt.

Executive Airlines has 30 days from the date of receipt of the FAA’s letter to respond to the agency.