What was found
**REPEAT HISTORY, TROUBLESHOOTING REQUIRED** / D:WHEN STARTING THE APU ON DESCENT AT 10,000 FT AND 250 KNOTS, APU FAILED TO START. GAVE IT A TWO MINUTE DELAY AND STARTED IT AGAIN WITHOUT ISSUE. AFTER THE SUCCESSFUL START BEFORE THE BLEED SWAP, A STRONG FUEL SMELL ENTERED THE FLIGHT DECK. NO FURTHER ISSUES. / C:MEL 49-10-1A / CAT "C" DUE 10/28/2022 / MX ACTION COMPLIED WITH / WHEN STARTING THE APU ON DESCENT AT 10,000 FT AND 250 KNOTS, APU FAILED TO START. GAVE IT A TWO MINUTE DELAY AND STARTED IT AGAIN WITHOUT ISSUE. AFTER THE SUCCESSFUL START BEFORE THE BLEED SWAP, A STRONG FUEL SMELL ENTERED THE FLIGHT DECK. NO FURTHER ISSUES. (FLIGHT 5409 - FILED CLOSED) OCT 18, 2022 STATION: FAR--VERIFIED NO EVIDENCE OF FUEL LEAKAGE IN THE APU ENCLOSURE IN REF TO AMM 49-20-00. PERFORMED OPERATION CHECK OF THE ENGINES IN REF TO AMM 71-00-00 AND PACKS PER AMM 21-51-00 TO ISOLATE AND VERIFY NO FUEL SMELLS IN CABIN OR COCKPIT PER FIM 21-21-00. NO EVIDENCE OF FUEL VAPOR WHEN RUNNING ENGINES AND PACKS. DEFERRED APU PER MEL 49-10-1A. MX ACTION COMPLIED WITH. AIRCRAFT OK FOR SERVICE.