Cat Hatter posted:

Some people (meth-addicts mostly) like to steal the covers off light poles to sell as scrap. Unfortunately for the city, the covers are kind of expensive and that's assuming they're even still available so they usually just stay open until someone electrocutes themselves and then they have to go weld blank plates over the holes that will have to be cut off for maintenance.

...or so I've been told. I don't have any firsthand knowledge.

Kaluza-Klein posted:

Indonesia Cites Resetting of Circuit Breaker in 2014 AirAsia Crash http://nyti.ms/1Pr67t4

I suppose it is not surprising, but the control system can't survive a reset

Kaluza-Klein posted:

Indonesia Cites Resetting of Circuit Breaker in 2014 AirAsia Crash http://nyti.ms/1Pr67t4

I suppose it is not surprising, but the control system can't survive a reset

quote:

6. Neither pilot had had stall* or upset recovery training because those conditions were believed to be impossible due to the protections provided by the FAC, so the pilots did not recover appropriately. The aircraft fell for about a minute and then broke up at around 12,000 feet.

*They had had "approach to stall" recovery training, how to return to normal flight after the computer has prevented you from stalling the aircraft, but not training about how to save your aircraft when you have already stalled it.

Powerful Two-Hander posted:

Christ how can "yeah this thing that planes do will never happen so we won't bother teaching you about it" be a sound basis for a pilot training programme.

Alereon posted:

Eh not so much. I think everyone would prefer that you re-host to imgur or something if only because the image is more likely to disappear or get replaced with a bandwidth exceeded message if you don't, but it's been a long time since someone was probated for leeching or I saw an image get replaced with goatse. _{This message brought to you by a computer forum mod whose opinions hold no sway here.}

E: My memory isn't as good as I thought it was, image leeching rules are still enforced in some cases, so err on the side of caution.

Kafouille posted:

It's not like the plane was impossible to fly after that either, it just switched to 'alternate law', basically manual mode instead of having the computer fly the plane for you and hold your hand. The co-pilot just apparently forgot how planes fly beyond 'Pull stick to go up' and stalled the thing.

Baronjutter posted:

Airlines, like all capitalist ventures, are run by the absolute scum of the earth and they under-pay and under-train pilots while over-working them.

Arrath posted:

This kind of reasoning and trust in the machines is why my roommate got the back and rear side Windows of his car tinted to blackout curtain levels. Because he has a backup camera now

Now I'm just waiting for him to back onto something. Or get ticketed for the abyss black Windows.

quote:

All airlines in the U.S. practice recovery techniques from unusual attitudes, commonly referred to as upset recoveries.

AirAsia's attitude was that this type of training was unnecessary because Airbus engineering designs electronic protections to prevent such unusual attitude upsets. But these protections degrade if mechanical malfunctions cause the airplane to enter what Airbus calls "Alternate Law," which is the circumstance faced by the pilots of AirAsia 8501.

ghostter posted:

these forums are a capitalist venture

Sagebrush posted:

from the AI thread:

Baronjutter posted:

Airlines, like all capitalist ventures, are run by the absolute scum of the earth and they under-pay and under-train pilots while over-working them.

Wired posted:

One day, [Margaret Hamilton's four-year-old daughter] Lauren was playing with the MIT command module simulator’s display-and-keyboard unit, nicknamed the DSKY (dis-key). As she toyed with the keyboard, an error message popped up. Lauren had crashed the simulator by somehow launching a prelaunch program called P01 while the simulator was in midflight. There was no reason an astronaut would ever do this, but nonetheless, Hamilton wanted to add code to prevent the crash. That idea was overruled by NASA. “We had been told many times that astronauts would not make any mistakes,” she says. “They were trained to be perfect.” So instead, Hamilton created a program note—an add-on to the program’s documentation that would be available to NASA engineers and the astronauts: “Do not select P01 during flight,” it said. Hamilton wanted to add error-checking code to the Apollo system that would prevent this from messing up the systems. But that seemed excessive to her higher-ups. “Everyone said, ‘That would never happen,’” Hamilton remembers.

But it did. Right around Christmas 1968—five days into the historic Apollo 8 flight, which brought astronauts to the moon for the first-ever manned orbit—the astronaut Jim Lovell inadvertently selected P01 during flight. Hamilton was in the second-floor conference room at the Instrumentation Laboratory when the call came in from Houston. Launching the P01 program had wiped out all the navigation data Lovell had been collecting. That was a problem. Without that data, the Apollo computer wouldn’t be able to figure out how to get the astronauts home. Hamilton and the MIT coders needed to come up with a fix; and it needed to be perfect. After spending nine hours poring through the 8-inch-thick program listing on the table in front of them, they had a plan. Houston would upload new navigational data. Everything was going to be OK. Thanks to Hamilton—and Lauren—the Apollo astronauts came home.

Baronjutter posted:

Airlines, like all capitalist ventures, are run by the absolute scum of the earth and they under-pay and under-train pilots while over-working them.

quote:

The so-called "abnormal attitude" law is:

Pitch alternate with load factor protection (without auto-trim)
Lateral direct law with yaw alternate.

These laws trigger, when extreme values are reached:

Pitch (50 ‹ up, 30 ‹ down)
Bank (125 ‹),
AOA (30 to 40 ‹, -10 ‹),
Speed (440 kt, 60 to 90 kt),
Mach (M 0.91).

It is very unlikely that the aircraft will reach these attitudes, because fly-by-wire provides protection to ensure rapid reaction far in advance. This will minimize the effect and potential for such aerodynamic upsets.

The effectiveness of fly-by-wire architecture and the existence of control laws eliminate the need for upset recovery maneuvers to be trained on protected Airbus aircraft.

FIRST TIME posted:

Now I can't help but picture someone who just installed a backup camera going to town on their back window with a couple of cans of black Krylon.

Phanatic posted:

It's not the airline. That bit is from *Airbus's flight crew training manual*:

ghostter posted:

these forums are a capitalist venture

Number_6 posted:

Even if it's not required in the training program for the Airbus, didn't these pilots come up on small, light aircraft without fly-by-wire poo poo? I mean even if you only flew the Cessna on Microsoft FS98, you could learn to recognize and recover from a stall.

froward posted:

there's an entire thread about airline pilots where they bemoan how little they're paid

Gorilla Salad posted:

/\/\/\ That would be Korean Airlines.

The Dark One posted:

Isn't that what basically doomed with Air France 447? The pilots weren't trained to recognize the signs of/recover from a stall and they dropped out of the sky like a stone.

Number_6 posted:

Even if it's not required in the training program for the Airbus, didn't these pilots come up on small, light aircraft without fly-by-wire poo poo? I mean even if you only flew the Cessna on Microsoft FS98, you could learn to recognize and recover from a stall.

mormonpartyboat posted:

That was more a categorical failure in flying an airplane without an autopilot. They boned up their route which led them into a storm, causing the icing event that put the plane into alternate law,

quote:

and that led to nonsense like correcting for increased roll sensitivity by going up to their max altitude and stalling out. They were so nose up that the computer considered the angle of attack input to be invalid and stopped giving a stall warning after a minute,

quote:

but that probably didn't matter since they didn't seem to realize they were stalling or what altitude they were at or really anything at all until the last few seconds before impact. That's why there was no mayday - it wasn't "holy hell we're falling how do I stop it" it was "huh wonder what's going on?????"

Dillbag posted:

Phanatic posted:

Stalling at low speeds in a Cessna is radically different from high-speed, high-altitude flight. Yes, stall recovery is part of getting a pilot's license, but the problem is that knowing how to do it in that context is not the same thing at all from knowing what to do in a commercial airliner.

http://www.ainonline.com/aviation-news/2012-05-14/understanding-high-altitude-aerodynamics-critical

Say Nothing posted:

This is more OHSHIT than OHSA.

Robo Reagan posted:

wa hapen

Arrath posted:

That would be great but sadly not quite. it's a new car with a factory camera and a legit installed limo level tint on all glass rear of the b pillar. I just doubt the wisdom of going for "I can see vague shapes"

GnarlyCharlie4u posted:

https://www.youtube.com/watch?v=n1wV3lmbSv4

Robo Reagan posted:

wa hapen