As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EN ROUTE TO LGW SLAT ASSY LIGHT ILLUMINATED AND FLAP POSITION INDICATOR BEGAN BOUNCING BETWEEN 0 AND .5 DEGREE. A/C HAS EXTENSIVE HISTORY OF THIS PROBLEM. A/C DIVERTED TO JFK AS A PRECAUTION. FAULTS 276285 CARD 10 CARD AND SW PREV REPLACED. REPLACED PS BITE CK OK. INSPECTED CONNECTOR P4434J FOUND SILVER PINS INSTALLED. PINS FREE AND CLEAR OF CORROSION AND CLEAN. REINSTALLED CONNECTOR.