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Search: Posts Made By: C2H5OH
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Forum: Accidents and Close Calls
6th Feb 2024, 21:22
Replies: 1,950
Views: 935,650
Posted By C2H5OH

This is what caught my eye and will leave me head...

This is what caught my eye and will leave me head shaking for the night. Need some time to google some standards.
Forum: Accidents and Close Calls
25th Jan 2024, 10:16
Replies: 1,950
Views: 935,650
Posted By C2H5OH

IMHO you have doors (functional for access) and...

IMHO you have doors (functional for access) and plugs (non-functional) and you have "plug type" (surface mating, self-sealing & self locking under pressure) and "semi-plug type" (multi-point mating,...
Forum: Accidents and Close Calls
25th Jan 2024, 08:55
Replies: 1,950
Views: 935,650
Posted By C2H5OH

I'll extend that by saying, it is not good...

I'll extend that by saying, it is not good practice to have a non-functional removable item, that has to be removed for an inspection every 24 months, which would not be needed if that item wasn't...
Forum: Accidents and Close Calls
24th Jan 2024, 16:04
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Yeah, have the shopfloor rats blame themselves in...

Yeah, have the shopfloor rats blame themselves in workshops and hands-on learning, „tracking“ ad-hoc made up BS actions „to closure“. That will get the spirit up and improve things, for sure :ugh:.
Forum: Accidents and Close Calls
24th Jan 2024, 07:28
Replies: 1,950
Views: 935,650
Posted By C2H5OH

From what I read, they are there, to fix warranty...

From what I read, they are there, to fix warranty claims on the cheap for and under the commercial control of the supplier - but under the supervision and technical control of the OEM.
Forum: Accidents and Close Calls
24th Jan 2024, 06:15
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Translated in common language: We don't cancel...

Translated in common language:
We don't cancel the order just yet, because we would have to pay contractual penalties. So we are waiting for Boeing to acknowledge that they cannot fulfill their...
Forum: Accidents and Close Calls
23rd Jan 2024, 17:01
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Seven days since posting under that Leeham...

Seven days since posting under that Leeham article and yet no word in Seattle or NYT?
Could be good OpSec though, not calling the numbers provided. Wouldn’t do that either.
Forum: Accidents and Close Calls
19th Jan 2024, 06:46
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Excellent modelling, well done! That gives a...

Excellent modelling, well done!
That gives a pretty robust upper threshold of that probability.
In my experience pax are sometimes moved around by (sympathetic and motivated) FAs, if they know...
Forum: Accidents and Close Calls
17th Jan 2024, 05:59
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Thought I had followed the entire thread, but...

Thought I had followed the entire thread, but maybe I overlooked something:
Do we know in the meantime what inspections had been ordered by "the Manager, AIR-520" in the first place and what...
Forum: Accidents and Close Calls
14th Jan 2024, 07:01
Replies: 1,950
Views: 935,650
Posted By C2H5OH

This would be amusing in a peculiar way, because...

This would be amusing in a peculiar way, because the manufacturer and its supplier would have had the same difficulty of defining this a door or non-door as this forum.
It also would mean that...
Forum: Accidents and Close Calls
12th Jan 2024, 06:59
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Good catch, so we know now, that it may still be...

Good catch, so we know now, that it may still be open, when the fuselage is being prepared for rail transport, for some unknown reason. That means it is not installed, and immediately closed and...
Forum: Accidents and Close Calls
12th Jan 2024, 06:31
Replies: 1,950
Views: 935,650
Posted By C2H5OH

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/...

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/499x441/image_6e740afba2a61cdec1be03c28448d5c8c2cb0e0e.png

Too many JPG artifacts in that picture to be sure, could be there though as some edge...
Forum: Accidents and Close Calls
11th Jan 2024, 13:24
Replies: 1,950
Views: 935,650
Posted By C2H5OH

You mean pressure not tension? The fastening...

You mean pressure not tension?
The fastening method is a feature: By giving it some wiggle room, it will adjust itself each time the hull is pressurized for minimum stress (besides the delta p).
Forum: Accidents and Close Calls
11th Jan 2024, 06:24
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Found this comment interesting: Now, I am...

Found this comment interesting:


Now, I am far from convinced, but it may be one of the more plausible scenarios.
That guide track, roller, locking pin assembly, we were looking at about a...
Forum: Accidents and Close Calls
10th Jan 2024, 11:19
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Regardless of who first installed the plug or...

Regardless of who first installed the plug or removed and reinstalled it during the course of production for whatever reason, I have the very strong opinion that the point in time to (re)inspect the...
Forum: Accidents and Close Calls
10th Jan 2024, 07:05
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Without using adjectives one has to understand...

Without using adjectives one has to understand that laying off 1/3 to 1/2 of ones workforce in the MCAS fiasco back in 2020 an hiring new workforce in 2022 does come at a cost.
Forum: Accidents and Close Calls
9th Jan 2024, 10:47
Replies: 1,950
Views: 935,650
Posted By C2H5OH

No pic of the inside, but sign me up as a fan,...

No pic of the inside, but sign me up as a fan, nevertheless. Do know now, why Jenny was so enthusiastic.
Boeing Door Plug From Alaska Airlines Flight Found in Teacher’s Yard - The New York Times...
Forum: Accidents and Close Calls
9th Jan 2024, 09:13
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Pressure difference @FL160 is 45kPa, the door...

Pressure difference @FL160 is 45kPa, the door shall have 1m^2 surface, so force is 45kN or 4500 kp or equivalent weight of 4,5 metric tonnes.

Those terrorist better go to the gym.
Forum: Accidents and Close Calls
9th Jan 2024, 08:55
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Scenario 1: Door fails open Scenario 2 w/o vent...

Scenario 1: Door fails open
Scenario 2 w/o vent door: bulkhead collapses uncontrolled
Scenario 2 w/ vent door: bulkhead does not collapse

Probably wishful thinking that there have been some more...
Forum: Accidents and Close Calls
9th Jan 2024, 06:17
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Not suggesting it has anything todo with this...

Not suggesting it has anything todo with this incident but just out of curiosity:
Some 25 years ago when I was licensed to work on much smaller equipment, we would install the cotter pins by folding...
Forum: Accidents and Close Calls
8th Jan 2024, 11:58
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Must be interference fit. Does only make sense,...

Must be interference fit. Does only make sense, if loads are entirely carried by the stop plates and pins. I still haven't understood entirely how the stop pins and plates disengage. Are they...
Forum: Accidents and Close Calls
8th Jan 2024, 11:14
Replies: 1,950
Views: 935,650
Posted By C2H5OH

That's what I thought when I first saw that axial...

That's what I thought when I first saw that axial bore. I further thought, that the bolt may slide into that fitting by installing a tool and pulling towards the center of the plug. However this is...
Forum: Accidents and Close Calls
7th Jan 2024, 18:42
Replies: 1,950
Views: 935,650
Posted By C2H5OH

Only that they are remarkably short for my...

Only that they are remarkably short for my eyeball and gusts - compared to the depth of that fitting.
Forum: Accidents and Close Calls
7th Jan 2024, 15:35
Replies: 1,950
Views: 935,650
Posted By C2H5OH

My question was related to how they get into...

My question was related to how they get into these postions.
Forum: Accidents and Close Calls
7th Jan 2024, 14:37
Replies: 1,950
Views: 935,650
Posted By C2H5OH

So how are those bolts installed then? ...

So how are those bolts installed then?
Tool/Screw inserted through the plug fitting and fastened in the axial bore of the bolt, then pulled in place and secured with a safety pin?
Showing results 1 to 25 of 25


 
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