As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ODOR SMELL ACRID AT 1950Z FL 310 .NOTICED AROUND ROW 26, SMELL DISSIPATED AFTER 5 MINUTES. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE IN SEAT POWER SUPPLY AT SEAT ROW 26DEF AND ACCOMPLISHED A RESET OF THE SYSTEM AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER THE VIASAT AMM 25-21-42.