As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CHEMICAL/BURNING ODOR COMING FROM PACKS WHEN SUPPLIED BY ENGINE AIR MORE EVIDENT AT HIGH POWER SETTINGS. REMOVED AND REPLACED LEFT AND RT PACK WATER SEPARATOR COALESCER IAW M/M 21-55-51 P/N 22D10 RAN ALL ENGINES IAW JRH 5.2, NO ODORS OR DEFECTS NOTED.