Loss of Pitch Control During Takeoff Air Midwest Flight 5481 - Pitch Control Cable System Animation2
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- Опубліковано 2 лют 2015
- Board Meeting Animation - Loss of Pitch Control During Takeoff Air Midwest Flight 5481 Raytheon (Beechcraft) 1900D, N233YV, Charlotte, North Carolina
January 8, 2003
Presented February 26, 2004
Pitch Control Cable System Animation
This three-dimensional animation (with narrated audio) is divided into two segments. This second segment depicts the components and functions of the pitch control system and demonstrates the difference in a properly adjusted system and an improperly adjusted system.
Learned something new about airplane controls and how they work.
This seems super dangerous! Someone should make sure this system is adjusted correctly before flying.
Which pixel is the elevator?
Senseless crash
What was the result? Who made the adjustments?
Sub contracted maintenance facility did the routine maintenance and check. Mechanic had never worked on 1900's before. QA and mechanic decided to skip some steps in full calibration procedure contributing to crash. Aircraft was also overweight and had aft C.G.
Why is this video not uploaded in HD?
John Thimakis it's from 2004, 480p _was_ HD back then and 4K was still just a madman's dream.
@@alphatangovideo5308
Well I was expecting at least 480. You are right though, we take technology for granted, forgetting that it was not that long ago when HD didn't even exist.
Even though it says 240, it actually looks worse, probably using poor compression techniques. I don't think there are many videos (old ones) on UA-cam that aren't at least 360p.
@@jtveg It was _uploaded_ to YT in 2015, when at least 720p if not 1080p was already available. However, as it was rendered for general internal distribution eleven years earlier, probably using simple software on some random NTSB media room employee's desk computer, 240p would have been about the practical limit, and probably either a VideoCD compliant (352x240 with 1150kbit of MPEG-1 for the video track) using a relatively poor quality freeware / CDR-drive bundled encoder, or maybe even WMV output from an early version of Windows Movie Maker with the bitrate scrunched way down to better fit intranet (or worse, email) filesize limits.
Certainly I wasn't making videos in any higher quality than that at the time - being able to burn DVDs was still, personally, a year or two off (essentially, when I bought a new laptop that had a bundled external DVDRW... that I still occasionally use), and both the hard drive space of storage (even worse for the raw temporary files than the encoded versions) and CPU demands of encoding meant generating MPEG-2 content at 480/576i (or 480/576p for computer playback) still wasn't common, vs simply ripping and deCSSing DVDs then burning backup copies, or using DVDR(W)s as an at-the-time cheaper alternative general backup media (including for downloaded 360/480p DivX / other MP4 videos) instead of external HDDs...
Moore's law is a harsh mistress if you live life in reverse. It wasn't too long previous to that when encoding your own videos using pure software was a lesson in torture, and most computers would even struggle to render 480p (or even 240p...) MPEG files for playback without dedicated hardware assistance, so you'd better hope your CDROM encyclopaedia had its 160x100 video snippets encoded as something lighter like Indeo or Cinepak (or the dreaded Quicktime), and your 2x read-only drive was fast enough to stream the data off in realtime... A similar step further back and Amiga demo discs (on 800k floppies) that replayed a barely recognisable version of a pop video (postage stamp within an already quasi-240p display, four shades of grey only, and about 4fps) with a scratchy version of the soundtrack behind it, after a minute or so of loading, were considered marvels. Throughout the entire span from that through to DIY DVD creation being a practical prospect, VHSes were still on sale (even if only just at the end), and the entire progression covered maybe half the entire lifespan of that older format...
480 isn't even available. 240 is all we get.@@alphatangovideo5308
7deg down should be enough to level an aircraft... Surely?
some 1 side Aircraft was also overweight and had aft C.G.
No. The B1900D can be loaded far aft, and need a lot of that nose down trim. Believe me, I flew it yesterday. Also, I looked at the NTSB video. If it is correctly synched with the indicated airspeed, they rotated at the flaps 17 speed. This would require even more down yoke force to control.
Cables suck. Go electric.