As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED, PILOT REPORTS LEADING EDGE SLAT ASSYMETRY LIGHT AFTER TAKEOFF. MAINTENANCE TROUBLESHOT AND FOUND PXOX BOX (PSEU) AT FAULT , S276 SHOWS "NEAR" REGARDLESS OF SLAT POSITION. REPLACED PROX BOX (PSEU) IAW AMM 32-09-04. ALL TEST NORMAL.