As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. AIR INTERRUPT, EMERGENCY DECLARED, LANDING UNEVENTFUL. DURING CLIMB THE HORIZONTAL STABILIZER PRIMARY TRIM FAILED. ALTERNATE TRIM OPERATED NORMALLY. R & R THE CAPTAIN"S PRIMARY TRIM YOKE SWITCH IAW AMM 27-40-02. RESET PRIMARY TRIM DRIVE A, B AND C CIRCUIT BREAKERS AND ACCOMPLISHED OPS CHECK. SYSTEM CHECKS NORMAL.