As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU DID NOT START IN FLIGHT ON DESCENT DOOR OPENS & STARTER ENGAGED BUT NO LIGHT OFF. WE SHUTDOWN APU, WAITED & ATTEMPTED AGAIN, THIS TIME APU APPEARED TO START NORMALLY. AFTER ABOUT 20 SECONDS A VERY STRONG ODOR OF JET A WAS NOTICED IN THE COCKPIT & CABIN. PERFORMED OPERATIONS CHECK OF APU IAW AMM 49-10-00. OPERATIONS GOOD, OK FOR SVC.