The agency would not name the carriers under investigation. FAA officials said penalties could be levied, though it would be several months before the probe was complete.
FAA says 4 US airlines under investigation
WASHINGTON Federal Aviation Administration officials say an audit of airline maintenance found three airlines had missed inspection deadlines. At a brieing at Washington's Reagan National Airport, the officials said that wiring in the wheel well was one area where carriers failed to comply with "air worthiness directives."