Boeing has delivered its first 787 Dreamliner since May of last year.
American Airlines said it received its first Boeing 787-8 aircraft this year and the first since April 2021.
The aircraft was delivered from Charleston, South Carolina.
It is expected to enter commercial service in the coming weeks.
"American currently has 47 active 787 family aircraft in its fleet with an additional 42 on order. We appreciate the work done by the Federal Aviation Administration and Boeing during the review process," the airline said Wednesday.
The carrier has 25 787-8 and 22 787-9 aircraft in service.
The news sent shares up 4.5% and American Airlines CEO Robert Isom took to Instagram, reiterating that the airline expects to receive a total of nine 787s in 2022.
The aerospace company told Reuters it had resumed deliveries after "thorough engineering analysis, verification and rework activities to ensure all airplanes conform to Boeing’s exacting specifications and regulatory requirements."
The outlet first reported on Monday that the Federal Aviation Administration (FAA) had cleared the way for the plane's delivery.
In September 2020, the FAA said it was investigating manufacturing flaws in some 787 jetliners.
Boeing has around 120 787s awaiting delivery.
In January, the company disclosed a $3.5 billion charge due to 787 delivery delays and customer concessions, as well as another $1 billion in production costs stemming from production flaws and related repairs and inspections.
Reuters contributed to this report.