As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#350, GND-JFK. 'DIRTY SOCK ODOR ON GROUND WITH APU ON. DIRTY SOCK ODOR DISAPPEARED AFTER ENGINE START. DIRTY SOCK/FUMES STARTED @ FL340 2HR INTO FLIGHT. ISOLATED PACK 1 SMELL AND FUME STOPPED ( APU SYSTEM ).' (SUPPLEMENTAL INFORMATION TO FOLLOW)