B737-300 crew had a bird strike just after liftoff that damaged #2 engine.

Attributes
ACN	561430
Time
Date	200209
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : grr.airport
State Reference	MI
Altitude	agl single value : 20
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : grr.tower tower : dsm.tower
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 1428
ASRS Report	561430
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe inflight encounter : birds
Independent Detector	other flight crewa other flight crewb
Resolutory Action	other
Consequence	other other
Supplementary
Problem Areas	Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Bird strike just after liftoff runway 17 at grr. Did not feel any impacts. Shortly thereafter, we noticed a humming noise and a slight vibration in the floor. Continued to level off at 12000 ft and when power was reduced, humming and vibration almost imperceptible. All engine parameters were normal. Contacted dispatch and maintenance and we all agreed to continue to destination. Vibration returned on final with a higher power setting. Postflt inspection revealed a bird strike in #2 engine which had bent the tips of 3 blades. No other damage noted.

Original NASA ASRS Text

Title: B737-300 CREW HAD A BIRD STRIKE JUST AFTER LIFTOFF THAT DAMAGED #2 ENG.

Narrative: BIRD STRIKE JUST AFTER LIFTOFF RWY 17 AT GRR. DID NOT FEEL ANY IMPACTS. SHORTLY THEREAFTER, WE NOTICED A HUMMING NOISE AND A SLIGHT VIBRATION IN THE FLOOR. CONTINUED TO LEVEL OFF AT 12000 FT AND WHEN PWR WAS REDUCED, HUMMING AND VIBRATION ALMOST IMPERCEPTIBLE. ALL ENG PARAMETERS WERE NORMAL. CONTACTED DISPATCH AND MAINT AND WE ALL AGREED TO CONTINUE TO DEST. VIBRATION RETURNED ON FINAL WITH A HIGHER PWR SETTING. POSTFLT INSPECTION REVEALED A BIRD STRIKE IN #2 ENG WHICH HAD BENT THE TIPS OF 3 BLADES. NO OTHER DAMAGE NOTED.

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.