Go Back  PPRuNe Forums > Flight Deck Forums > Rumours & News
Reload this Page >

UA 433 loses part of exterior panel SFO-MFR

Wikiposts
Search
Rumours & News Reporting Points that may affect our jobs or lives as professional pilots. Also, items that may be of interest to professional pilots.

UA 433 loses part of exterior panel SFO-MFR

Thread Tools
 
Search this Thread
 
Old 16th Mar 2024, 03:36
  #1 (permalink)  
Thread Starter
 
Join Date: May 2004
Location: Toronto, Canada
Age: 73
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
UA 433 loses part of exterior panel SFO-MFR

Lots of posts and news reports, most apparently containing false info about diversion and emergency landing, for UA 433 SFO-MFR, where post-landing inspection revealed a "lost panel". Try:
https://www.ktvu.com/news/united-air...-missing-panel
Not my area of expertise at all, but from the photo it looks to me as though most of the panel was torn off, some top part remaining. Given proximity to LG, could something have got caught on gear-up or more likely gear-down? No FOD found at MFR, but if due to conflict with gear, I'd be searching below the up/down locations once identified.

Over to the the knowledgeable...
boaclhryul is offline  
Old 16th Mar 2024, 08:20
  #2 (permalink)  
Pegase Driver
 
Join Date: May 1997
Location: Europe
Age: 74
Posts: 3,687
Likes: 0
Received 0 Likes on 0 Posts
B737-800, from 1998 ex Continental according airliners, Cannot judge the actual damage but the overall appearance around the missing panel indicates an aircraft rather poorly taken care of . if I compare it with a major European or Asian-Pacific airline.
Is this typical United standard of care or just an exception ?
ATC Watcher is offline  
Old 16th Mar 2024, 08:55
  #3 (permalink)  
 
Join Date: Aug 2020
Location: Far East
Posts: 217
Received 38 Likes on 28 Posts
Just heard of it, on a major Radio Station News in Germany.

And of course they mentioned the recent Alaska incident as "part of the fuselage came off leaving a hole" and that Boeing is already under observation.

The tone was not in a sensational style.
waito is online now  
Old 16th Mar 2024, 10:36
  #4 (permalink)  
 
Join Date: Mar 2002
Location: near an airplane
Posts: 2,794
Received 52 Likes on 42 Posts

Screenshot from the article above and the Tweet embedded in it.
Jhieminga is offline  
Old 16th Mar 2024, 12:31
  #5 (permalink)  
 
Join Date: Oct 2022
Location: Surrey
Posts: 45
Received 27 Likes on 9 Posts
If the wing panel is anything to go by, I would say some duff fibre glass repairs. Water ingress, freezing/thawing cycle, loss of panel integrity, loss of panel. Have seen something similar on a leading edge panel with a botched repair, a heater mat was left on too long.
Rebus is online now  
Old 16th Mar 2024, 13:02
  #6 (permalink)  
Thread Starter
 
Join Date: May 2004
Location: Toronto, Canada
Age: 73
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Rebus
If the wing panel is anything to go by, I would say some duff fibre glass repairs. Water ingress, freezing/thawing cycle, loss of panel integrity, loss of panel. Have seen something similar on a leading edge panel with a botched repair, a heater mat was left on too long.
So airflow / pressure in behind might have blown it out?
boaclhryul is offline  
Old 16th Mar 2024, 13:07
  #7 (permalink)  
 
Join Date: Feb 2002
Location: UK
Age: 58
Posts: 3,501
Received 165 Likes on 89 Posts
Is that the flap drive mechanism I can see there?
TURIN is offline  
Old 16th Mar 2024, 13:21
  #8 (permalink)  
txl
 
Join Date: Jan 2008
Location: Berlin
Age: 56
Posts: 97
Likes: 0
Received 0 Likes on 0 Posts
From a news report:

The panel found to be missing was on the underside of the aircraft where the wing meets the body and just next to the landing gear, United said.
Looks like the cover next to the slot where the landing gear unfolds. Landig gear strut visible in the top left corner. See this screenshot, taken from opposite perspective:


​​​​​​​
txl is offline  
Old 16th Mar 2024, 17:10
  #9 (permalink)  
 
Join Date: Dec 2020
Location: The world
Posts: 24
Likes: 0
Received 0 Likes on 0 Posts
While Boeing is getting the FAA version of a colonoscopy, most of the incidents we've been reading about lately appear to be a result of poor maintenance at United Airlines. How worried should passengers be?
Ikijibiki is offline  
Old 16th Mar 2024, 17:53
  #10 (permalink)  
639
 
Join Date: Mar 2022
Location: UK
Posts: 48
Received 3 Likes on 3 Posts
Originally Posted by Ikijibiki
While Boeing is getting the FAA version of a colonoscopy, most of the incidents we've been reading about lately appear to be a result of poor maintenance at United Airlines. How worried should passengers be?
It's far more widespread than one airline or even one industry
Standards are dropping everywhere, Its what you get for decades of declining educational standards.
639 is offline  
Old 16th Mar 2024, 18:22
  #11 (permalink)  
 
Join Date: Jul 2013
Location: Everett, WA
Age: 68
Posts: 4,413
Received 180 Likes on 88 Posts
Originally Posted by Ikijibiki
While Boeing is getting the FAA version of a colonoscopy, most of the incidents we've been reading about lately appear to be a result of poor maintenance at United Airlines. How worried should passengers be?
I've seen several reports that members of the US Congress are demanding that the United CEO appear before Congress and explain why United has been having so many recent incidents (not seen anything with regard to his response).

Meanwhile the MSM can continue to blame Boeing for there lousy design and built practices that allow bits to fall off 20+ year old aircraft that haven't been properly maintained.

Last edited by tdracer; 16th Mar 2024 at 19:00.
tdracer is online now  
Old 16th Mar 2024, 18:24
  #12 (permalink)  
 
Join Date: Oct 2019
Location: USA
Posts: 849
Received 201 Likes on 111 Posts
Could we get Congress to appear before Congress and explain why they are doing such a crap job and trying to distract by getting CEOs on the hot seat?
MechEngr is online now  
Old 16th Mar 2024, 18:35
  #13 (permalink)  
 
Join Date: Jan 2007
Location: Location: Location!
Posts: 2,302
Received 35 Likes on 27 Posts
Just love the Fox report which reads “United Airlines flight lands with missing panel” rather than “United Airlines flight lands with panel missing”!

Jack
Union Jack is offline  
Old 16th Mar 2024, 19:14
  #14 (permalink)  
 
Join Date: Nov 2000
Location: Canada
Posts: 603
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Jhieminga

Screenshot from the article above and the Tweet embedded in it.
strange, it appears that the rip was back to front (largest remaining pieces at the front)
Longtimer is offline  
Old 16th Mar 2024, 21:56
  #15 (permalink)  
 
Join Date: Mar 2015
Location: Virginia, USA
Posts: 450
Likes: 0
Received 20 Likes on 13 Posts
Originally Posted by MechEngr
Could we get Congress to appear before Congress and explain why they are doing such a crap job and trying to distract by getting CEOs on the hot seat?
It’s an odd dynamic that the American public accepts its elected representatives calling constituents before congress for a public browbeating. Not quite what the Founding Fathers had in mind.

If Kirby does appear, curious to know whether he will be wearing a suit or a dress.
BFSGrad is offline  
Old 17th Mar 2024, 04:47
  #16 (permalink)  
 
Join Date: Jul 2022
Location: USA
Posts: 20
Likes: 0
Received 0 Likes on 0 Posts
Nothing but a fairing although the fastener heads are still secured implying fairing has been coming apart for some time. Clearly could have been flagged on a preflight .unless fairing condition is ignored in preflight. Agreed AC appears in ratty condition.
tsumini is offline  
Old 17th Mar 2024, 04:59
  #17 (permalink)  
 
Join Date: Oct 2019
Location: USA
Posts: 849
Received 201 Likes on 111 Posts
Can water forced by tires reach that area? It may just the photo but the fairing in front of the damage looks rather clean while the remains from the damaged area looks like it't gotten a sand and grit power wash. There's also what appears to be a hard scuffed area to the right side of the missing panel.

It could easily be some penetration that allowed water to enter, freeze, and expand to delaminate the part.
MechEngr is online now  
Old 17th Mar 2024, 06:50
  #18 (permalink)  
 
Join Date: Aug 2020
Location: Far East
Posts: 217
Received 38 Likes on 28 Posts
How dangerous is this departing panel? Material, mass... (regarding impact on some aircraft sections, people, ground equipment)?
waito is online now  
Old 17th Mar 2024, 09:41
  #19 (permalink)  
 
Join Date: Mar 2018
Location: Central UK
Posts: 1,625
Received 135 Likes on 64 Posts
Just another poor excuse to trigger the media and other vindictive frothers-at-the-mouth to launch into yet another anti-Boeing feeding frenzy, as if this has anything at all to do with Boeing...
meleagertoo is offline  
Old 17th Mar 2024, 09:46
  #20 (permalink)  
 
Join Date: Mar 2010
Location: Hamburg
Posts: 162
Likes: 0
Received 6 Likes on 3 Posts
Originally Posted by waito
How dangerous is this departing panel? Material, mass... (regarding impact on some aircraft sections, people, ground equipment)?
What remains of the panel, in the photograph, appears to show that it is largely constructed from layers of either Carbon Fibre Reinforced Plastic (CFRP), or Glass Fibre Reinforced Plastic (GFRP), or possibly both, around a core of non-metallic honeycomb. These are common materials used in aircraft structures, and result in lighter weight parts, compared to, for example, a similar part skinned with aluminium alloy.

However, despite being relatively light, a fibre reinforced plastic and honeycomb piece, of the size suggested by the missing piece in the photo, falling from thousands of feet, likely spinning due to uneven aerodynamic forces, will certainly have the mass and capability to cause death or serious injury. Humans are soft and squishy, and the rough, broken edge of a falling, spinning piece like that could easily scythe into flesh. Quite apart from what being smacked on the head by the weight of the piece would do!

More solid, inorganic objects are also very likely to be damaged. 😉
Stuart Sutcliffe is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.