What was found
ORD - FLT 502 - F/S REPORTS STRONG TOXIC SMELL IN CABIN. MAINTENANCE FOUND O-RING FOR YELLOW HYDRAULIC SYSTEM HP FILTER BLOWN OUT. REMOVED AND REPLACED YELLOW HP FILTER O-RINGS. NO LEAKS NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - FLT 502 - F/S REPORTS STRONG TOXIC SMELL IN CABIN. MAINTENANCE FOUND O-RING FOR YELLOW HYDRAULIC SYSTEM HP FILTER BLOWN OUT. REMOVED AND REPLACED YELLOW HP FILTER O-RINGS. NO LEAKS NOTED.