Birdstrike UA #12 ZRH-ORD / returned / cancelled 23 July 2022, cancelled 24 July
Jul 23, 22, 3:05 pm
#1
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Birdstrike UA #12 ZRH-ORD / returned / cancelled 23 July 2022, cancelled 24 July
After birdstrike on left engine at dpearture flight returned to ZRH and ended up cancelled.
There were reportedly strong vibrations at take-off. Bird identified as a hawk (Bussard in German)
There were reportedly strong vibrations at take-off. Bird identified as a hawk (Bussard in German)
Jul 23, 22, 5:42 pm
#3
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Fuel load. ZRH-ORD would have a significant fuel load at take off. Flight cannot dump fuel over land. If safety is not an immediate concern, then fly to Atlantic and dump some fuel before returning to land.
Jul 23, 22, 8:52 pm
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they didn't make it to the Atlantic, it was near the Channel. Looking at the log there appears to be a normal climb profile and cruise. The crew may have been running checklists and conferring with dispatch on diversion options if the a/c was stable. Maybe something changed or degraded in that period and the decision was made to return. 2 hours of flight is landing lighter as well. We don't know the sequence or all the events.
Jul 24, 22, 9:43 am
#8
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Theres no reason to think that a delay or cancellation a flight one day is related to a similar event the next day. They dont frequently shuttle one aircraft back and forth between two airports, so, although its possible, its not usual that UA12 on Thursday would be operated by the same plane as UA12 on Friday.
Jul 24, 22, 10:08 am
#9
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Theres no reason to think that a delay or cancellation a flight one day is related to a similar event the next day. They dont frequently shuttle one aircraft back and forth between two airports, so, although its possible, its not usual that UA12 on Thursday would be operated by the same plane as UA12 on Friday.
Jul 24, 22, 10:16 am
#10
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We can dump fuel over land, and if high enough, it evaporates into the air. That said, we prefer to do so over water or under populated areas to avoid any possible environmental issues.
Jul 24, 22, 10:19 am
#11
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There certainly can be a cascading effect on plane type/ qualified pilots caused by the first event. You have pilots in Zurich w/o a plane they were to crew. That trio of pilots is now out of sync. With staffing situations, UA may have decided to route ORD- Z customers via other us entry points until they could get crew/ a/c back in synch
Jul 24, 22, 11:00 am
#12
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they didn't make it to the Atlantic, it was near the Channel. Looking at the log there appears to be a normal climb profile and cruise. The crew may have been running checklists and conferring with dispatch on diversion options if the a/c was stable. Maybe something changed or degraded in that period and the decision was made to return. 2 hours of flight is landing lighter as well. We don't know the sequence or all the events.
I'm all for safe flight but don't scare the passengers
Jul 24, 22, 1:39 pm
#13
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@757FO: Would an engine typically kept running after a birdstrike?
Most likely it was in this case given the fact that the flight continued on for 2 hrs (?)
LX has two flights to ORD, vs one to EWR and none to IAD. This might support the decision to cxl ORD first, as there is more JV capacity for rebookings on that route.
Most likely it was in this case given the fact that the flight continued on for 2 hrs (?)
LX has two flights to ORD, vs one to EWR and none to IAD. This might support the decision to cxl ORD first, as there is more JV capacity for rebookings on that route.
Last edited by WineCountryUA; Jul 24, 22 at 2:29 pm Reason: merged consecutive posts by same member
Jul 24, 22, 6:57 pm
#14
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@757FO: Would an engine typically kept running after a birdstrike?
Most likely it was in this case given the fact that the flight continued on for 2 hrs (?)
LX has two flights to ORD, vs one to EWR and none to IAD. This might support the decision to cxl ORD first, as there is more JV capacity for rebookings on that route.
Most likely it was in this case given the fact that the flight continued on for 2 hrs (?)
LX has two flights to ORD, vs one to EWR and none to IAD. This might support the decision to cxl ORD first, as there is more JV capacity for rebookings on that route.
Remember the FAA requirements are that the large engines ingest multible large birds and continue running long enough to make an airturnback shortly after takeoff regardless of the symptoms of distress
