As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH LEFT PACK ON AND ONLY APU PNEUMATICS, STRONG SMELL OF JET FUEL IN FLIGHT DECK. PERFORMED 20 MINS OF APU OPERATION BOTH AC NO FUMES EVIDENT I.A.W AMM 21-00-21-102-030 REB 145.00. TXFRD TO MAINTENIX TASK ID T3F18E006ZXJX FOR DEFECT RECTIFICATION.