As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB SMELL LIKE BURNT RUBBER FROM AVIONICS AREA. WENT AWAY AFTER 3 MINUTES IN DESCENT AROUND 20.000 FT SMELL COME BACK STRONG FOR 5 MINUTES NOT COMING FROM AIR CONDITIONING-PERFORMED T.S.M. 24-00-00-810-823A SEARCHING FOR POSSIBLE ARCING, CHAFING OR SHORT CIRCUITS. NO DAMAGES FOUND NO PREVIOUS HISTORY A/C OK FOR CONTINUE OPERATION