What was found
CLT - FLT 1579 - JUST AFTER TAKEOFF, THE NR 1 ENGINE INJESTED A MEDIUM SIZED BIRD. NO ADVERSE AFFECT WAS NOTICED IN ENGINE PARAMETERS BUT CREW DID NOTICE A DIFFERENT NOISE COMING FROM THAT ENGINE. A MOMENTARY SMELL IN CABIN WAS PRESENT AND A VIBRATION WAS FELT AT CERTAIN POWER SETTINGS. FLIGHT RETURNED TO FIELD AT CLT AS A PRECAUTION AND LANDED WITHOUT FURTHER INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE ACCOMPLISHED BIRDSTRIKE INSPECTION AND BOROSCOPE INSPECTION PER MM 71-00-47. NO DEFECTS NOTED. CLEANED FAN, CORE INLET VANES AND OIL COOLER. AIRCRAFT OK FOR SERVICE (M)