As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1557, POS-JFK. A MANURE-LIKE ODOR NOTICED DURING CLIMB OUT IN THE AFT CABIN AREA WHILE IN SOME RAIN SHOWERS PACK 2 WAS TURNED OFF AND THE MANURE-LIKE ODOR DISSIPATED AND DID NOT RETURN; ACCOMPLISHED DUAL ENG RUN PER AMM 71-00-00 & IDENT OF CABIN ODOR PER AMM 05-50-00 UNABLE TO DUPLICATE ODOR. COMPLIED WITH INFO NOTICE 2017-T015 AIRCRAFT IS OK FOR SVC LEVEL A (MOISTURE/RAIN)