Narrative:

Takeoff runway 28 bwi. Approximately 200 ft (gear in transit), 4 mallard ducks were ingested into the left engine. Vibration monitors indicated serious vibration. Bwi tower was notified and returned to bwi airport to land on runway 33L. Total time in air was less than 10 mins total time. The engine was not shut down due to all parameters monitored, ie, temperatures, N1, N2 oil pressure were normal. The vibration eliminated with reduced thrust. The controller was very helpful and efficient in handling this situation. There were no injuries, and no conflict.

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Original NASA ASRS Text

Title: LGT HAS BIRD INGESTION AT 200 FT AGL. RETURN LAND.

Narrative: TKOF RWY 28 BWI. APPROX 200 FT (GEAR IN TRANSIT), 4 MALLARD DUCKS WERE INGESTED INTO THE L ENG. VIBRATION MONITORS INDICATED SERIOUS VIBRATION. BWI TWR WAS NOTIFIED AND RETURNED TO BWI ARPT TO LAND ON RWY 33L. TOTAL TIME IN AIR WAS LESS THAN 10 MINS TOTAL TIME. THE ENG WAS NOT SHUT DOWN DUE TO ALL PARAMETERS MONITORED, IE, TEMPS, N1, N2 OIL PRESSURE WERE NORMAL. THE VIBRATION ELIMINATED WITH REDUCED THRUST. THE CTLR WAS VERY HELPFUL AND EFFICIENT IN HANDLING THIS SIT. THERE WERE NO INJURIES, AND NO CONFLICT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.