As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LHR - FLT 100 - EN ROUTE JFK-LHR, FIRST OFFICERS GRIMES UTILITY LIGHT SHORTS OUT AND CAUSED SPARKS WHEN TOUCHED TO A METAL OBJECT. POPPED UTILITY P31 CIRCUIT BREAKER ON OVERHEAD PANEL. REPLACED FIRST OFFICERS GRIMES UTILITY LIGHT. GROUND CHECK NORMAL OPERATION. (M)