What was found
FLT 700 - FMN-ABQ - AFTER TAKEOFF, CREW REPORTED SMOKE IN THE COCKPIT AND CABIN. AIRCRAFT RETURNED TO THE FIELD. NO EMERGENCY WAS DECLARED, THE MASKS WERE NOT DEPLOYED. MAINTENANCE T/S THE SYSTEM BUT WERE UNABLE TO DUPLICATE THE DISCREPANCY. NO DISCREPANCIES WERE NOTED, OPS CHECKED GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M)