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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsUnited Airlines 777 Nearly Crashes Departing Hawaii (Dec 18 2022, just being reported now )
I am surprised this has not been posted, as is all over MSN--but with all simply repeating the same thing.

This is the radar altitude track of the near disaster
The brief facts as gleaned from an aviation site {see below}is that a few minutes after takeoff UAL 1722 lost control at 2,200 feet, and began an up to 8,600 foot-per-minute uncontrolled descent over a 45 second period which was arrested only 775 feet above the ocean.
This descent was apparently totally missed by Air Traffic Control as instead of ATC saying something like "United 1722 Heavy, Say Altitude!!" no comment at all was made and 1722 was routinely cleared on its way.
Upon arrival in San Francisco, the pilots apparently filed an "Aviation Safety Reprotting System" report--which allows for a 'get of of jail free' card if a report is made to ATC or the FAA about an incident. The plane had a routine turnover in SF and then continued on to Chicago.
When this news broke, UAL would only say that United then closely coordinated with the FAA and ALPA {Airline Pilots Association} on an investigation that ultimately resulted in the pilots receiving additional training. Safety remains our highest priority."
Very strangely, there was apparently NOTHING posted on social media about this harrowing experience by anyone. The article speculates this may have been because the same day people were seriously injured on a Hawaiian Airlines flight near Maui.
There is SO MUCH of CONCERN here. Aviation seems to be suffering the same widespread rot as is experienced by many professions.
A United Airlines Boeing 777-200 came within around 800 feet of impacting the Pacific Ocean off the north coast of Maui shortly after takeoff on December 18. The occurrence, not previously reported, adds to a series of extremely serious safety incidents and major operational disruptions within the U.S. aviation system in recent weeks.
Flight 1722 from Maui to San Francisco left Kahului Airport at 2:49 PM Hawaiian time in stormy weather and initially appeared to climb normally. Granular data analyzed with Flightradar24 showed the aircraft reached roughly 2,200 feet before beginning a steep dive that, according to the tracking telemetry, reached a descent rate of nearly 8,600 feet per minute.
The aircraft quickly recovered, but not before descending below 775 feet. Two people familiar with the incident said the climb produced forces of nearly 2.7 times the force of gravity on the aircraft and its occupants as that steep descent transitioned to an 8,600 foot per minute climb. The entire incident appears to have stretched no more than 45 seconds and in between radio calls with air traffic controllers in Maui, according to LiveATC recordings reviewed by The Air Current.
The aircraft subsequently climbed to 33,000 feet and landed in California 27 minutes early after the 4-hour and 15-minute Pacific crossing. The Boeing widebody configured with 364 seats was quickly turned around at SFO and departed to Chicago on its next flight about two and a half hours later.
https://theaircurrent.com/aviation-safety/united-maui-dive-ua1722-close-call/
Ocelot II
(130,516 posts)EX500rider
(12,581 posts)Hekate
(100,133 posts)dalton99a
(94,109 posts)GreenWave
(12,640 posts)I think a number is missing/wrong because the math does not add up.
6450 feet dropped (based on 45 seconds and Alexa!)
Whew!
ProfessorGAC
(76,693 posts)One of those numbers has to be incorrect, or at least incompletely reported
You can't start at 2,200', drop 6,400 feet and not hit the water.
The plane wasn't falling straight down, maybe the 6,450 feet/minute was airspeed, with a significant fraction of that being down.
But, that doesn't seem right either, because that's only 108 feet per second which is only about 74mph. Way too slow.
Either way, scary.
I was coming back from Italy once and we fell from around 40,000 feet to about 38,500 is 6 to 8 seconds. That was pretty scary, but nothing like this.
EX500rider
(12,581 posts)Last edited Mon Feb 13, 2023, 06:36 PM - Edit history (1)
Word on my street is that it was a Flaps 20 takeoff and once Acceleration Height was reach to start retracting flaps on schedule, flaps were brought up from 20 to UP skipping 15 and 5 completely on accident. At max gross weight and low speed.ouch
JI7
(93,615 posts)some of the things going in with oversight, safety measures etc ?
MedRxx
(58 posts)Maui KOGG ATC could use a little polishing {REFresher TRAining} too.
Doubt that Jimmy Hogg would be happy with this level of airmanship

Response to MedRxx (Original post)
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