As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT, A SLIGHT PACK BURNING SMELL WAS OBSERVED. ABOUT 10 MINUTES INTO THE FLIGHT, THE LAV SMOKE DETECTOR SOUNDED. RETURNED TO LAX. FOUND RIGHT RAM AIR DOOR HINGE PIN DISLODGED. RESECURED RAM AIR DOOR HINGE PIN IAW MM. OPERATED PACKS. OPS CHECKS GOOD.