As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: DUE TO REPORTED S.O.F., PERFORM S.O.F. INITIAL TROUBLESHOOTING J/C 72L00021001. ACCOMPLISHED J/C 72L00021001 FOUND RH LOWER RECIRCULATION FAN HARD TO MOVE AND WITH BURNING SMELLING DUE TO FRICTION. REPLACED RH LOWER RECIRCULATION FAN IAW AMM 21-25-07