Quote:
Originally Posted by dmbetc
This post is basically a foreign language to me.
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deviating from ATC's directions = disobeying what Air Traffic Control tells you. = BAD. fucking bad. Only way you can do this legally is if you've already declared an emergency in-air, in which case you can do whatever the fuck you want to get the plane on the ground safely. Sully broke about 700 laws/regulations, but he declared an emergency in-flight so it gets swept under the rug, mostly. Don't fucking deviate.
glideslope indicators are (usually)
4 lights on the side of the runway.
In this case, as well as at John Wayne, there is a 4 light system Precision Approach Path Indicator. You want 2 red lights and 2 white lights. When you do, that means you're approaching the runway at a 3 degree angle = good. If you're above that 3 degree line, you get more white lights/less red lights (you're going to land long/past the designated landing area. Not the end of the world usually as you normally have more than enough runway to brake safely). If you're above it, you get more reds/less whites (you're going to land short of the end of the runway, bad bad bad).
So before you fly to a specific airport, you're supposed to look up several things about the destination. One of which is what kind of approach indicators they use (how many lights, some larger airports have more sophisticated systems that also tell you left/right of the center of the runway, etc.) and in the airport manual it tells you where these lights are located. If he knew they were supposed to be on the left of runway 20L, he would've known he wasn't lined up with the fucking runway. So either he didn't know they should've been on the left, or he wasn't looking at them.