What was found
BOS- FLT 4719 - AFTER DEPARTURE OF FLIGHT 4719 BOS TO ROC, THE RIGHT AIR VALVE FAIL LIGHT CAME ON. THE AIRCRAFT RETURNED TO BOS. AFTER TROUBLESHOOTING AND A TEST FLIGHT, MAINTENANCE FOUND A BROKEN WIRE IN THE WHITE HARNESS OF THE RIGHT NACELLE, WIRE HL519-22 AT CONNECTOR 25HL. AIRCRAFT RELEASED FOR A TEST FLIGHT AND FLEW SATISFACTORILY. (X)