Flight Crew reported bird strike during initial takeoff climb.
Synopsis
Flight Crew reported bird strike during initial takeoff climb.
Narrative
During initial climb out; our aircraft struck multiple large birds at approximately 700 ft. MSL. Initially the EVM COMP (Engine Vibration Monitoring) indicated yellow boxed on engines 1 and 3. At the same time engine #1 N1 rolled back to below engine 2 and 3 levels then returned back to normal. However; there was a very noticeable airframe vibration. Also a foul odor filled the cabin. We [requested priority handling] and leveled off at 4000 ft. MSL and requested vectors to turn back to ZZZ. We concluded that the engines most likely ingested large birds and possibly sustained damage. I contacted dispatch via SAT phone to inform them of our situation and our intent to return to ZZZ. Since there were no alerts or malfunctions; there were no checklists to perform. We executed a manual landing to XXC. Upon landing; we stopped on the runway to allow fire crews to inspect the exterior. They informed us of damage and blood on the left side of the aircraft. We continued to the gate with no further incidents. Bird strike on initial climb
Second reporter narrative
During initial climb out; our aircraft struck multiple large birds at approximately 700 ft. MSL. Initially the EVM COMP (Engine Vibration Monitoring) indicated yellow boxed on engines 1 and 3. At the same time engine #1 N1 rolled back to below engine 2 and 3 levels then returned back to normal. However; there was a very noticeable airframe vibration. Also a foul odor filled the cabin. We [requested priority handling] and leveled off at 4000 ft. MSL and requested vectors to turn back to ZZZ. We concluded that the engines most likely ingested large birds and possibly sustained damage. I contacted Dispatch via SAT phone to inform them of our situation and our intent to return to ZZZ. Since there were no alerts or malfunctions; there were no checklists to perform. We executed a manual landing to XXC. Upon landing; we stopped on the runway to allow fire crews to inspect the exterior. They informed us of damage and blood on the left side of the aircraft. We continued to the gate with no further incidents.Striking large birds.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.