Quote:
Originally Posted by Chuck Bass
On long flights over the oceans, do planes always take the most direct route, or are the flight paths designed so that you'd fly nearer to some islands or whatever so that in case something goes wrong you'd have a potential landing site more often?
|
See
N 82 50 24's answer to this (
post 4385). I don't think I can improve on that.
Quote:
|
Does the size of the plane (talking 100+ person carrying airliners) correlate with safety; i.e. are the jumbo jets somehow even more safe than the regular Airbuses/Boeings?
|
All the planes you fly when you buy an airline ticket are certified under
FAR Part 25 AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES. Some designs exceed this standard or implement some of the requirements in ways that someone might consider "safer," but I'm not sure this is quantifiable.
One example is the hydraulic systems. Every Part 25 airplane will have redundancy here, but some planes are designed with two hydraulic systems and some with three. But this doesn't necessarily correlate with the size of the plane. The MD-88 has two systems; the smaller CRJ has three.
We obviously have redundancy in the electrical systems, with a separate generator being driven by each engine. Many airplanes also have a RAT (Ram Air Turbine, aka ADG or Auxiliary Drive Generator on some planes), which is a small propeller-driven electrical generator that extends into the slipstream in the case of a complete electrical failure. This generator can power the essential subset of components to get the plane on the ground safely. Some models of the 767 (the ER, for example) also have an extra component called an HDG (Hydraulic Driven Generator) which will use hydraulics to turn a small backup electrical generator.
Ram Air Turbine deployed
If every electrical generator and all the backups fail, the ship's battery is required to provide power to essential items for at least 30 minutes. This would be enough time to get on the ground (unless you're over the middle of the ocean, in which case you're just having a really bad day).
Long-winded response, I know. But the bottom line is that the size of the plane doesn't necessarily correlate to safety. Larger aircraft have the luxury of more redundancy in some cases, but even small planes have redundancy as required by Part 25.
Quote:
|
What's the skill level of air traffic controllers in 3rd world countries in 2012? I've read quite a bit of the wikis of some older plane accidents and at least in a few cases it seems one big factor in the crash has been the communication issues between ATC and pilots and I think they were all in Africa or in the poorer South American countries. If you fly over like Afghanistan or something do you ever have any issues with the ATC?
|
Services in some parts of the world can only be described as "adequate." If you stick to the script and use standard phraseology, you get through it. I've flown in many areas that are non-radar environments and we have procedures to enhance our safety in these cases (e.g. flying in Africa, we use a common air-to-air frequency to announce position and altitude in the blind when crossing airway intersections).
I've never had any serious issues with ATC, but I wouldn't want to put it to the test in some places I've flown. Flying over North America, talking to U.S. and Canadian controllers, gives me much more of a warm, fuzzy feeling. European controllers are also very good for the most part, but sometimes the heavily accented English can cause some confusion.
Quote:
|
Do you ever have problems understanding what the ATC are saying in countries with heavy accents like France or Japan (where they pronounce the r's differently etc)?
|
I haven't flown into Asia yet, so I can't comment on that, but it's funny you mentioned France because that's the accent I used to have the most trouble with when flying to Europe, especially with female controllers. I overcame this by learning to anticipate what was coming. (This is the same thing I used to teach my flying students. A big part of a low-time pilot's problem with understanding ATC comes from not knowing what to expect. Once you know the normal sequence and cadence of an ATC transmission, it's very easy to follow.) To do this, I'd follow our course on the en route chart and I could see where we crossed the next ATC boundary. Most of the time, this would be the fix that the controller would clear us to, so now I could recognize it when the clearance came.