What was found
EN ROUTE TO PHL, NOXIOUS FUMES WERE IN COCKPIT. NO EICASE, NO SMOKE. DIVERTED TO BDL. F/O R1 WINDOW HEAT SYSTEM AFT CORNER SMOKING WHEN WINDOW HEAT TURNED ON. AWAITING LP TO CLOSE, DEFERRED F/O R1 WINDOW HEAT SYSTEM D275899. R/R F/O'S R1 WINDOW PER MM 56-11-01-4, OPS CK GOOD. REFERENCE LP77516 8.