As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED IN FLIGHT. WENT OUT ON IT'S OWN. GROUNDED - YES. ACCOMPLISHED BITE OF PFTC-L REF FIM 21-62 TASK 801. LAST LEG MAINT MESSAGE 21-51246 LOGGED. DUE TO HISTORY, REPLACED LEFT PACK FLOW SENSOR REF AMM 21-51-43. ALL GND TESTS PASS.