As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THERE WAS AN ACRID SMELL IN THE COCKPIT. NO VISUAL SIGNS OF SMOKE WERE EVIDENT. REMOVED + CLEANED WATER SEPARATOR COALESCER CLOTH IAW CE-680 M/M CHPT 12-14-00. RAN ACFT WITH BOTH ENGINES AND TROUBLESHOT WITH APU RUNNING, RAN TEMP CONTROLLER HOT TO COLD NO SMELLS NOTED.