The civil penalty addresses 124 flights from March 20 to April 17, 2008.
'When it comes to maintenance, it's unacceptable for any air carrier not to meet the FAA's standards,' said FAA Administrator Randy Babbitt.
But a FedEx spokesman said his company would appeal the decision, saying the company believed its inspection program exceeded that of the FAA and the manufacturer. He said the dispute was not a safety issue, but a disagreement about documentation, and that the company had met with the FAA before the units were put into service and approved FedEx’s plans.