TSA Precheck went into operation at MCO's West checkpoints (which includes AA) in November.
An excerpt from
the press release:
Under TSA Pre✓™ U.S. citizens traveling domestically who are select Alaska, American, Delta, United and US Airways frequent travelers or members of U.S. Customs and Border Protection (CBP) Trusted Traveler programs are now eligible to participate and may receive expedited screening benefits.