As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING TAKEOFF OUT OF DCA THERE WAS A VERY STRONG DIRTY, MUSTY, AND OILY SMELL THROUGH OUT THE ENTIRE AIRCRAFT. REMOVED AND REPLACED NUMBER 1 ENGINE. PER JOBCARD 08L40072003. REMOVE AND REPLACED LEFT (AALA202510070691) AND RIGHT (AALA202510079234) RECURCULATION AIR FILTERS. PER AMM 21-25-01.