A B777 on takeoff experienced a bird ingestion in the right engine; which produced a noticeable vibration. Flight crew shut down the engine; declared an emergency; and returned to land at departure airport.

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Attributes
ACN	731798
Time
Date	200703
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 1000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	731798
Events
Anomaly	aircraft equipment problem : critical inflight encounter : birds
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : landed in emergency condition flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft Environmental Factor
Primary Problem	Environmental Factor

Narrative:

Departed runway 8R approximately 562000 pounds; 160000 pounds fuel; bird strike right engine at 1000 ft; 'TO1' reduced power 'to.' engine indications quickly returned to normal except N1 vibration at 4.5 - 4.9 units with noticeable aircraft vibration on the seat of your pants. Declared an emergency; commenced left turn downwind climbing to 3000 ft; dumping fuel; vectors ILS runway 8R; terminated dump on final; landed minimum sink rate approximately 520000 pounds. Aircraft inspected by fire crew with no brake smoke or damage to the aircraft. Taxied to gate; postflt showed 3 distorted fan blades; 2 with cracks at the tips. Believe the bird bypassed the core.

Original NASA ASRS Text

Title: A B777 ON TAKEOFF EXPERIENCED A BIRD INGESTION IN THE R ENGINE; WHICH PRODUCED A NOTICEABLE VIBRATION. FLT CREW SHUT DOWN THE ENGINE; DECLARED AN EMERGENCY; AND RETURNED TO LAND AT DEP ARPT.

Narrative: DEPARTED RWY 8R APPROX 562000 LBS; 160000 LBS FUEL; BIRD STRIKE R ENG AT 1000 FT; 'TO1' REDUCED PWR 'TO.' ENG INDICATIONS QUICKLY RETURNED TO NORMAL EXCEPT N1 VIBRATION AT 4.5 - 4.9 UNITS WITH NOTICEABLE ACFT VIBRATION ON THE SEAT OF YOUR PANTS. DECLARED AN EMER; COMMENCED L TURN DOWNWIND CLBING TO 3000 FT; DUMPING FUEL; VECTORS ILS RWY 8R; TERMINATED DUMP ON FINAL; LANDED MINIMUM SINK RATE APPROX 520000 LBS. ACFT INSPECTED BY FIRE CREW WITH NO BRAKE SMOKE OR DAMAGE TO THE ACFT. TAXIED TO GATE; POSTFLT SHOWED 3 DISTORTED FAN BLADES; 2 WITH CRACKS AT THE TIPS. BELIEVE THE BIRD BYPASSED THE CORE.

Data retrieved from NASA's ASRS site as of January 2009 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.