Boeing is in strife.
The planemaker has been forced to halt deliveries of its 787 Dreamliner jets as it carries out tests on a key part.
Deliveries will not resume until America’s aviation body is satisfied a fuel issue has been addressed.
The FAA is also working with Boeing to determine any actions that may be required for recently delivered planes.
Boeing says it “discovered an analysis error by its supplier related to the 787 forward pressure bulkhead”.
After notifying the relevant authorities, it paused 787 deliveries while the required analysis and documentation is completed.
The company says there is no immediate safety or flight concern for the in-service fleet.
Earlier reports show Boeing has not handed over a Dreamliner since January 26, with dozens stored awaiting delivery because of a documentation issue.
