As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 307 - MEX-ACA - TECHNICAL PERSONNEL AT GATE REPORT THAT THE ENGINE NR 1 CSD HAD DAMAGE OUT OF LIMITS AND THE MASTER CAUTION LIGHT WAS ON AS A CONSEQUENCE OF OIL LOW PRESSURE. AIRCRAFT WAS SENT TO THE HANGAR AND THE CSD AND THE RADIATOR OIL WERE CHANGED IAW WITH MM 24-10-1 AND 24-10-3, TESTS OK. (M)