|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : hrl|
|Altitude||agl bound lower : 0|
agl bound upper : 0
|Operator||common carrier : air carrier|
|Make Model Name||Medium Large Transport, Low Wing, 2 Turbojet Eng|
|Flight Phase||climbout : takeoff|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 196|
flight time total : 5880
flight time type : 2250
|Affiliation||company : air carrier|
|Function||flight crew : first officer|
|Qualification||pilot : commercial|
pilot : instrument
|Anomaly||aircraft equipment problem : less severe|
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : rejected takeoff|
|Air Traffic Incident||other|
On takeoff roll at approximately V1 (133 KIAS) to vr (136 KIAS) we encountered a large flock of birds (at least 30-40 birds). At that time approximately 4-5 birds impacted the cockpit area. Out of a serious concern for probable multiple bird ingestion in both engines and the possibility of a dual engine failure after takeoff, I exercised my captain's emergency authority and aborted the takeoff. At the time of abort, there was in excess of 4000' of runway remaining and the aircraft was stopped with approximately 500-800' of runway remaining. The harlington crash crew was on the scene immediately. They informed me that the brakes were hot but that there was no danger of a fire. The aircraft was returned to the gate and the passenger were deplaned. At the time of the occurrence, there were 68 passenger plus a crew of 5. The aircraft weighed 91000 pound and was configured with 5 degree flaps. The abort speed was 135 KIAS. Upon checking the brake cooling chart, it was determined that the brake temperature/energy level had reached the caution zone requiring a 75 min cooling period. Had a mechanic inspect the aircraft. There were 5 bird strikes in the cockpit area, however no damage was sustained. There was no evidence of any bird streaks on the remainder of the airframe nor in the engines. After the proper cooling period, the brakes, tires and tire pressures were inspected. The brakes had cooled, the tires were in good condition and the tire pressures were within the normal limits. Air carrier system operations and maintenance control released the aircraft for flight. Flight hrl to iah was uneventful.
Original NASA ASRS Text
Title: MLG ABORTED TKOF AFTER STRIKING NUMEROUS BIRDS.
Narrative: ON TKOF ROLL AT APPROX V1 (133 KIAS) TO VR (136 KIAS) WE ENCOUNTERED A LARGE FLOCK OF BIRDS (AT LEAST 30-40 BIRDS). AT THAT TIME APPROX 4-5 BIRDS IMPACTED THE COCKPIT AREA. OUT OF A SERIOUS CONCERN FOR PROBABLE MULTIPLE BIRD INGESTION IN BOTH ENGS AND THE POSSIBILITY OF A DUAL ENG FAILURE AFTER TKOF, I EXERCISED MY CAPT'S EMER AUTHORITY AND ABORTED THE TKOF. AT THE TIME OF ABORT, THERE WAS IN EXCESS OF 4000' OF RWY REMAINING AND THE ACFT WAS STOPPED WITH APPROX 500-800' OF RWY REMAINING. THE HARLINGTON CRASH CREW WAS ON THE SCENE IMMEDIATELY. THEY INFORMED ME THAT THE BRAKES WERE HOT BUT THAT THERE WAS NO DANGER OF A FIRE. THE ACFT WAS RETURNED TO THE GATE AND THE PAX WERE DEPLANED. AT THE TIME OF THE OCCURRENCE, THERE WERE 68 PAX PLUS A CREW OF 5. THE ACFT WEIGHED 91000 LB AND WAS CONFIGURED WITH 5 DEG FLAPS. THE ABORT SPD WAS 135 KIAS. UPON CHKING THE BRAKE COOLING CHART, IT WAS DETERMINED THAT THE BRAKE TEMP/ENERGY LEVEL HAD REACHED THE CAUTION ZONE REQUIRING A 75 MIN COOLING PERIOD. HAD A MECH INSPECT THE ACFT. THERE WERE 5 BIRD STRIKES IN THE COCKPIT AREA, HOWEVER NO DAMAGE WAS SUSTAINED. THERE WAS NO EVIDENCE OF ANY BIRD STREAKS ON THE REMAINDER OF THE AIRFRAME NOR IN THE ENGS. AFTER THE PROPER COOLING PERIOD, THE BRAKES, TIRES AND TIRE PRESSURES WERE INSPECTED. THE BRAKES HAD COOLED, THE TIRES WERE IN GOOD CONDITION AND THE TIRE PRESSURES WERE WITHIN THE NORMAL LIMITS. ACR SYSTEM OPS AND MAINT CONTROL RELEASED THE ACFT FOR FLT. FLT HRL TO IAH WAS UNEVENTFUL.
Data retrieved from NASA's ASRS site as of August 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.