As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT PERSONNEL REPORTED BURNING SMELL FROM LEFT PACK AFTER TAKEOFF AND DURING CLIMB. NOTE; SMELL WENT AWAY WHEN LEFT PACK TURNED OFF. MAINTENANCE PERSONNEL REMOVED AND REPLACED WATER SEPARATOR ASSY IAW AMM 21-20-02. PERFORMED OPERATIONAL CHECK AT HIGH POWER ENGINE SETTINGS. NO BURNT ODOR NOTED. AIRCRAFT RETURNED TO SERVICE.