What was found
RETURN TO FIELD DUE TO AN ODOR, MORE PREVALENT AFT THAN FWD. PERFORMED FIM 21-20-00-810-801A. APU WAS NOT IN OPERATION. NO SOURCE EVIDENT IN CABIN. SUSPECT ENGINE RESIDUAL WAS FLUID.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
RETURN TO FIELD DUE TO AN ODOR, MORE PREVALENT AFT THAN FWD. PERFORMED FIM 21-20-00-810-801A. APU WAS NOT IN OPERATION. NO SOURCE EVIDENT IN CABIN. SUSPECT ENGINE RESIDUAL WAS FLUID.