To expand a bit on the clear definition provided by rb1957, here is a bit of real world example. Boeing uses a special numbering system to identify the fuselage inserts. They do this (I guess, I am not Boeing) so that the major aircraft components such as landing gear, engines, wings...
My background is not structural so take my point with a grain of salt. You have probably already reviewed this, but MMPDS-15 Chapter 2 for Steel gives some information about H900, though it does not detail the exact process. It also supports Wil's CAUTION comment about fracture toughness.
3DDave, your point is well taken. To insure a clean sheet would have to be a regulatory process, at a point in the design program that makes sense for safety. Otherwise the financial departments of the airlines would certainly follow the logic trail you stated. Star for you.
Quote from 3DDave (who I agree with)
"So Spirit is another company the FAA let run riot?
Another 350, or so, will be killed in the US general aviation operations this year.
Maybe the FAA needs to get out of their cubicals from time to time and actually do some work."
I think the FAA is too...
We need to cover the solar panels with Chief Engineer Montgomery Scott's Transparent Aluminum! It allowed carrying tons of whales and water (from the movie Star Trek IV - The Voyage Home) and still had a clear view of the whales inside so I would assume no blockage of the energy in the sun's...
This may be a gross over-simplification, and I am open to correction by my peers. Admittedly my experience is in Part 25 Transport aircraft certification, so I am weaker in other Parts of the regulations. As I understand the issues about alterations and repairs, both major and minor, here is...
RoarkS is spot on for 14 CFR Part 43, Maintenance. However, for those of us in the Transport Category type design/alteration world, 14 CFR Section 21.93 says this:
"...A 'minor change' is one that has no appreciable effect on the weight, balance, structural strength, reliability, operational...
drawoh, I have zero Unix experience with which to compare. I really like the "...charitably described as user-hostile..." phrase. I remember thinking similar thoughts when I first learned Edlin, the very early MS-DOS editor...though I never put those thoughts into words as eloquently as you did!
In the 1970's when I attended junior high, my dad insisted I take a typing class. Turns out that the typing class I took for typewriters (my dad envisioned me typing papers for college classes) has served me extremely well throughout my career with computers...thanks Dad!
I thought a bit of...
I have been trying to keep up with the sequence of events. I would appreciate correction if I missed something.
As I understand it, the four missing bolts are there only to keep the door plug from moving upwards. It is the 12 pads surrounding the door plug that transfer load from the door...
Just now received the FAA SAFO about the door plug. I quote the recommended action here from the SAFO.
"Recommended Action: Operators are encouraged to conduct a visual inspection to ensure the door
plug is restrained from any movements through the two (2) upper guide track bolts and two (2)...
The comment from 3DDave about American labor piqued my interest. I do not work at Boeing and have never worked at Boeing. I do have a question for someone who is in a position to know, such as a current or recent Boeing employee.
As part of my job I have been to a number of United States MRO...
