As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO SAN. FLIGHT ATTENDANTS REPORTED THERE WAS A PROPANE OR ROTTON EGGS SMELL THAT WAS THE STRONGEST IN THE MID CABIN DURING CLIMB AND AFTER THRUST REDUCTION. THE AIRCRAFT LANDED SAFELY AT SAN WITHOUT FURTHER INCIDENT. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)