During takeoff roll below V1, birds were ingested in the #2 engine. After an initial reject maneuver, the crew continued the takeoff returning immediately to land.

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Attributes
ACN	638163
Time
Date	200411
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : clt.airport
State Reference	NC
Altitude	agl bound lower : 1000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Make Model Name	A321
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : takeoff ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 20000 flight time type : 1200
ASRS Report	638163
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical ground encounters other inflight encounter : birds other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : engine compressor stall other flight crewa other flight crewb
Resolutory Action	flight crew : landed in emergency condition flight crew : diverted to another airport other
Consequence	other
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

On takeoff roll, observed 4-5 large birds moving from left to right off our nose. Before V1 speed, ingested birds in #2 engine, accompanied by explosive compressor stall and heavy yaw. Immediately rejected takeoff. Did not feel any deceleration. Elected to continue the takeoff. Went to toga power, rotated at vr, and climbed out on runway heading. Aircraft required full left rudder and some aileron as if we had lost #2 engine. Both climb and airspeed began deteriorating. First officer called out, 'right reverser unlocked.' I then immediately retarded right (#2) thrust lever. Aircraft started climbing and reacting normally. In the interim, I had begun drifting right of centerline. ATC asked if I wanted to land on runway 5. I said yes and continued turn, reconfigured and landed on runway 5 without incident. In retrospect, even though we were below V1 when we started the reject, we would probably have been better off continuing the takeoff without attempting the reject. If power on #2 engine had not been reduced, I'm not sure we would have been able to maintain flying speed.

Original NASA ASRS Text

Title: DURING TKOF ROLL BELOW V1, BIRDS WERE INGESTED IN THE #2 ENG. AFTER AN INITIAL REJECT MANEUVER, THE CREW CONTINUED THE TKOF RETURNING IMMEDIATELY TO LAND.

Narrative: ON TKOF ROLL, OBSERVED 4-5 LARGE BIRDS MOVING FROM L TO R OFF OUR NOSE. BEFORE V1 SPD, INGESTED BIRDS IN #2 ENG, ACCOMPANIED BY EXPLOSIVE COMPRESSOR STALL AND HVY YAW. IMMEDIATELY REJECTED TKOF. DID NOT FEEL ANY DECELERATION. ELECTED TO CONTINUE THE TKOF. WENT TO TOGA PWR, ROTATED AT VR, AND CLBED OUT ON RWY HDG. ACFT REQUIRED FULL L RUDDER AND SOME AILERON AS IF WE HAD LOST #2 ENG. BOTH CLB AND AIRSPD BEGAN DETERIORATING. FO CALLED OUT, 'R REVERSER UNLOCKED.' I THEN IMMEDIATELY RETARDED R (#2) THRUST LEVER. ACFT STARTED CLBING AND REACTING NORMALLY. IN THE INTERIM, I HAD BEGUN DRIFTING R OF CTRLINE. ATC ASKED IF I WANTED TO LAND ON RWY 5. I SAID YES AND CONTINUED TURN, RECONFIGURED AND LANDED ON RWY 5 WITHOUT INCIDENT. IN RETROSPECT, EVEN THOUGH WE WERE BELOW V1 WHEN WE STARTED THE REJECT, WE WOULD PROBABLY HAVE BEEN BETTER OFF CONTINUING THE TKOF WITHOUT ATTEMPTING THE REJECT. IF PWR ON #2 ENG HAD NOT BEEN REDUCED, I'M NOT SURE WE WOULD HAVE BEEN ABLE TO MAINTAIN FLYING SPD.

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.