As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BTV-PIT - FLT 1221 - NOTICED BURNING RUBBER SMELL IN COCKPIT AND CABIN BETWEEN 800 AND 3000 FEET DURING TAKEOFF. USED FULL POWER AND BOTH PACKS ON, SMELL WAS NOT OVERPOWERING, BUT NOTICEABLE. DISSIPATED ABOVE 3000 FEET. MAINTENANCE FOUND RIGHT HYDRAULIC SYSTEM OVERSERVICED. DRAINED HYDRAULIC SYSTEM TO PROPER LEVEL AND EMPTIED OVERFLOW JAR. OK FOR SERVICE. (M)