What was found
(CAN) WHILE ON A NON-REVENUE FLIGHT (NO PASSENGERS)Ï¿½THE LAV SMOKE DETECTOR SOUNDED WITH NO SMOKE OR ODOR APPARENT TO THE FLIGHT CREW. MAINTENANCE INVESTIGATED AND DISCOVERED THERE WAS AN OILY ODOR COMING FROM THE #1 ENGINE BLEED AIR SYSTEM AND WERE ABLE TO DUPLICATE THE FAULT DURING EXTENSIVE GROUND RUNS. AS A RESULT THE #1 ENGINE WAS REMOVED AND REPLACED. THERE HAVE BEEN NO RELATED DISCREPANCIES REPORTED SINCE AND A TEAR DOWN REPORT HAS BEEN REQUESTED FORM THE ENGINE REPAIR FACILITY.