Posted on 12/31/2024 3:17:47 AM PST by Libloather
93% of all professional accidents are caused by experts :)
When will we learn to stop trusting them blindly.
The wall apparently was the support for the instrument landing system. It also protected hotels and apartment buildings on the other side from a plane crash. How many additional people might have been killed if the wall hadn’t been there?
Jet blast walls are a thing, too.
Also lots of trees. The number of airports with runway runoff fields is really quite small. Cities tend to grow around airports. Pick a random major airport, go into Google Maps “Satellite” view, and look at the ends of some runways. Start with, say, DCA.
The plane landed on runway 19 (from the northern end). It was oriented toward the sea, so there were no hotels or apartment buildings to protect.
Look at the three minute mark on the attached video. This guy did an excellent analysis.
https://www.youtube.com/watch?v=XzBKCt8-uWg
American airports have the same ILS antennae at the ends of the runway. But they’re on poles designed to shear away if struck by a plane, and their bases are flush with the ground.
CC
At least in North America, there are rules about how much flat ground there is supposed to be past the end of the runway.
But most of the existing airports don’t meet them, and they were all grandfathered in.
In a lot of cases you overshoot you end up in the ocean, but that is better than hitting a bunker that creates nonsurvivable decelerations.
Every airport has beacons and instruments at the end of the runways. But I’ve never seen them be built inside a concrete bunker.
Imagine if the NHRA used this sophisticated strategy, a nice beautiful ‘safety’ wall at the end of the dragstrip.
Looks like we need more H-1B engineering geniuses from South Korea, only the best!
So from now on all airports will have to install endless runways.
The FAA has specific regulations for the required lengths of the Runway Protection Zone at ends of the runways. These are based on the size of the airplanes that the airport is rated from Category A (small general aircraft) to Category D (large commercial jet aircraft).
All federally registered airports are eligible for FAA safety grants to make improvements identified on their annual certification inspections.
“In a lot of cases you overshoot you end up in the ocean”
That is definitely the case for a bunch of airports on the East and West Coast.
In California I am surprised they did not put in walls to protect the fish.
Lol.
Look at Midway.
Watched it. Good analysis. Shutting down the wrong engine could explain loss of hydraulics, but not being able to manually drop the landing gear because they didn’t have time ? I don’t know. With both engines out and no flaps/slats deployed they must have been losing altitude quickly..but there are two crew members in the cockpit. You don’t need both to fly the plane at the same time. Guess we will find out.
Midway has an EMAS off the end of all runways. More airports need to get them. It certainly would have helped here.
Yes, shotgun, look at Midway.
LOL
There is also something called Engineered Materials Arrestor System that should slow a plane down.
https://en.m.wikipedia.org/wiki/Engineered_materials_arrestor_system
The Koreans must have thought what could slow a plane down faster than…. a concrete wall .
The regulations are wrong.
Another government eff-up.
Putting up a reinforced concrete wall covered in dirt is criminal. Localizers have no need for this.
While they may have shut the wrong engine down, the problem is that they did not deploy flaps, which do not require hydraulic power to deploy.
Coming in at flaps-up speed was suicidal. They also “floated” down the runway and used up over 3000 feet of the 10,000 foot runway before touching down.
They hit a reinforced concrete wall at over 150 mph. If that barrier was not there, they would have gone through the airport block wall, but more passengers would have survived.
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