UA Flight returns to EWR after dropping debris on takeoff 21 Sept 2022
Sep 22, 2022, 8:10 am
#1
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UA Flight returns to EWR after dropping debris on takeoff 21 Sept 2022
https://twitter.com/aviationbrk/status/1572857395545624576
United 777 returns safely to Newark Airport following a technical issue, reportedly a problem with its hydraulics. A photo appeared on social media of suspected falling debris from the aircraft.
Sep 22, 2022, 8:21 am
#2
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UA 149 to GRU diverted. Circled over the atlantic for a little over an hour
https://flightaware.com/live/flight/...305Z/KEWR/KEWR
https://flightaware.com/live/flight/...305Z/KEWR/KEWR
Sep 22, 2022, 9:41 am
#4
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That's weird. I didn't even check the tail number. Previous issue was due to smoke in the cabin, right?
Sep 22, 2022, 11:52 am
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Sep 23, 2022, 11:41 am
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nice technical answer. Can you tell us a bit more? I’m an A&P but only worked on light aircraft. So does the hydraulic pump for landing gear work off of bleed air? Looks like a failure of the impeller or something along those lines. I am curious.
Sep 23, 2022, 12:08 pm
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On the 767, the center hydraulic system has the high-load items, gear and flaps, and is powered by three pumps. Two electric pumps which run all the time and a third air-driven demand pump (ADP) which runs only when demand exceeds the capability of the two main pumps. The ADP is powered by pneumatic pressure and will normally run during gear retraction, which is consistent with the phase of flight in the video.
On the 767, if the ADP is deferred, there is a rather severe weight penalty on takeoff (several thousand pounds). The penalty is because the gear retraction cycle will be a lot slower which will affect the climb angle in the event of an engine failure during takeoff and a lighter weight is required to maintain the applicable safety margin.
Sep 23, 2022, 3:09 pm
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If you haven't watched any of the VASAviaton videos in the past, check out the one they did on UA149. It includes the video and ATC traffic
Some of these recent incidents remind me of COdbaUA canceling INTL flights left and right due to a variety of mx issues in 2014 and 2015.
Consolidated "Delayed/Cancelled" International Flights (2014)
Consolidated "Delayed/Cancelled" International Flights (2015)
Some of these recent incidents remind me of COdbaUA canceling INTL flights left and right due to a variety of mx issues in 2014 and 2015.
Consolidated "Delayed/Cancelled" International Flights (2014)
Consolidated "Delayed/Cancelled" International Flights (2015)