What was found
AFTER TAKEOFF, BURNING ODOR FILLED REAR CABIN AND COCKPIT, QUICKLY DISSAPATED. SHORTLY AFTER CENTER TANK PUMP 1 LOW PRESSURE. DID NOT RESET AFTER SELECTING CENTER TANK PUMP 1 OFF. ODOR DISAPPEARED COMPLETELY. NOTE NO SMOKE WAS SEEN AT ALL CENTER TANK SYSTEMS, PUMP, SINGLE. ACCOMPLISHED INSPECTION IAW TSM 24-00-00-810-823A. NO EVIDENCE OF ELECTRICAL OR ANY OTHER DAMAGE. R & R CTR TANK PUMP 1 SUPPLY GFI CONTACTOR IAW TSM 28-21-00, OPS TEST GOOD, NO FAULT NOTED.