What was found
EN ROUTE, LEFT AIR CYCLE MACHINE FAILED IN FLIGHT, ACCOMPANIED BY BAD ODORS AND AN AUDIBLE NOISE IN CABIN. AIRCRAFT RETURNED TO DAL AND MADE AN UNEVENTFUL LANDING. REPLACED AIR CYCLE MACHINE PER BOEING M/M.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EN ROUTE, LEFT AIR CYCLE MACHINE FAILED IN FLIGHT, ACCOMPANIED BY BAD ODORS AND AN AUDIBLE NOISE IN CABIN. AIRCRAFT RETURNED TO DAL AND MADE AN UNEVENTFUL LANDING. REPLACED AIR CYCLE MACHINE PER BOEING M/M.