As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - FLT 4027 - CREW REPORTED SMELL OF SMOKE IN FLIGHT AT FULL CLIMB POWER. FOUND SMOKE SMELL CAUSED BY PRECOOLER SENSOR INOPERATIVE. REMOVED AND REPLACED PRECOOLER SENSOR, OPERATIONALLY CHECKED AND TEST FLOWN SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)