During takeoff from bos, ma, a B737-200 encounters a bird strike, declares an emergency, return land...

Attributes
ACN	378035
Time
Date	199708
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bos
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 6000 flight time type : 1000
ASRS Report	378035
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 260 flight time total : 3500 flight time type : 260
ASRS Report	377123
Events
Anomaly	aircraft equipment problem : less severe conflict : ground critical inflight encounter other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : regained aircraft control other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We were taking off on bos runway 22R when we struck some birds that had been on the runway. A loud bang was felt and heard at vr. Not knowing what damage, if any, we had, we declared an emergency, left the landing gear down, and landed on runway 27. No indication on the engine instruments suggested damage, so both engines we left running. There was a pungent odor coming through the air vents and we therefore concluded a bird strike. ATIS had reported light bird activity in the area. Maintenance inspections revealed 1 bird strike on the right leading edge flap and 1 on the #2 (right) engine inlet cone, which subsequently was ingested into the engine. Extent of damage, if any, was unknown at the time. We handled the entire event without any problems. The only distraction was the constant ringing by the flight attendants. The whole event lasted only a few (approximately 5) mins, but was definitely a busy evolution. It would have helped if the flight attendants could have coordinated their calls and waited 2-3 mins for us to sort things out. They were duly debriefed. Supplemental information from acn 377123: right at rotation from runway 22R in bos, several dark large birds (later idented as blacktail hawks) lifted up off the runway. Evasive maneuvers were impossible, so we plowed right through them, several (maybe 4 or 5) striking the right side of the airplane and at least 1 (we suspect 2) going through the right engine. The engine momentarily lost power, requiring application of left rudder, and we heard the engine compressor stall. But it recovered in just a second or two. Passenger on the right side of the airplane confirmed that flames shot out the front of the engine, and then out the back. We left the gear and flaps/slats in the takeoff position in case they were damaged, declared an emergency, and turned left and landed on runway 27 uneventfully. Maintenance found several bird strike marks on the airframe and in the engine, but no damage.

Original NASA ASRS Text

Title: DURING TKOF FROM BOS, MA, A B737-200 ENCOUNTERS A BIRD STRIKE, DECLARES AN EMER, RETURN LAND AT BOS.

Narrative: WE WERE TAKING OFF ON BOS RWY 22R WHEN WE STRUCK SOME BIRDS THAT HAD BEEN ON THE RWY. A LOUD BANG WAS FELT AND HEARD AT VR. NOT KNOWING WHAT DAMAGE, IF ANY, WE HAD, WE DECLARED AN EMER, LEFT THE LNDG GEAR DOWN, AND LANDED ON RWY 27. NO INDICATION ON THE ENG INSTS SUGGESTED DAMAGE, SO BOTH ENGS WE LEFT RUNNING. THERE WAS A PUNGENT ODOR COMING THROUGH THE AIR VENTS AND WE THEREFORE CONCLUDED A BIRD STRIKE. ATIS HAD RPTED LIGHT BIRD ACTIVITY IN THE AREA. MAINT INSPECTIONS REVEALED 1 BIRD STRIKE ON THE R LEADING EDGE FLAP AND 1 ON THE #2 (R) ENG INLET CONE, WHICH SUBSEQUENTLY WAS INGESTED INTO THE ENG. EXTENT OF DAMAGE, IF ANY, WAS UNKNOWN AT THE TIME. WE HANDLED THE ENTIRE EVENT WITHOUT ANY PROBS. THE ONLY DISTR WAS THE CONSTANT RINGING BY THE FLT ATTENDANTS. THE WHOLE EVENT LASTED ONLY A FEW (APPROX 5) MINS, BUT WAS DEFINITELY A BUSY EVOLUTION. IT WOULD HAVE HELPED IF THE FLT ATTENDANTS COULD HAVE COORDINATED THEIR CALLS AND WAITED 2-3 MINS FOR US TO SORT THINGS OUT. THEY WERE DULY DEBRIEFED. SUPPLEMENTAL INFO FROM ACN 377123: R AT ROTATION FROM RWY 22R IN BOS, SEVERAL DARK LARGE BIRDS (LATER IDENTED AS BLACKTAIL HAWKS) LIFTED UP OFF THE RWY. EVASIVE MANEUVERS WERE IMPOSSIBLE, SO WE PLOWED RIGHT THROUGH THEM, SEVERAL (MAYBE 4 OR 5) STRIKING THE R SIDE OF THE AIRPLANE AND AT LEAST 1 (WE SUSPECT 2) GOING THROUGH THE R ENG. THE ENG MOMENTARILY LOST PWR, REQUIRING APPLICATION OF L RUDDER, AND WE HEARD THE ENG COMPRESSOR STALL. BUT IT RECOVERED IN JUST A SECOND OR TWO. PAX ON THE R SIDE OF THE AIRPLANE CONFIRMED THAT FLAMES SHOT OUT THE FRONT OF THE ENG, AND THEN OUT THE BACK. WE LEFT THE GEAR AND FLAPS/SLATS IN THE TKOF POS IN CASE THEY WERE DAMAGED, DECLARED AN EMER, AND TURNED L AND LANDED ON RWY 27 UNEVENTFULLY. MAINT FOUND SEVERAL BIRD STRIKE MARKS ON THE AIRFRAME AND IN THE ENG, BUT NO DAMAGE.

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.

During takeoff from bos, ma, a B737-200 encounters a bird strike, declares an emergency, return land at bos.