129

Large parts of France's airspace are designated military training areas. If there is military flight training going on, the choice of routing over France is very limited. The only option is to fly around these areas, which results in the routes you found. Higher altitude route map of France courtesy of EUROCONTROL[PDF, 8MB] Since the PDF seems to be ...


117

helps prevent slips and falls contains spills (your spilt soda won't ruin your neighbors bag) more easily removed and replaced helps reduce cabin noise


107

"Sterile Cockpit" refers to the concept that pilots should not discuss anything not related to the flight during certain phases of flight (often defined as below FL100). A passenger occupying the lavatory while the flight is on approach and passengers are supposed to be in their seats definitely does have an impact on the flight, so it does not fall under ...


103

There certainly are; it's called "Business Class" and you'll find such areas with seats that recline into what are essentially beds on most long-haul aircraft. However, you simply can't fit as many people on board when they use up so much room, so airlines have to charge much more for these to make it economically viable. It's often twice the price of a ...


79

There are several reasons: First In, First Out They are given precedence to board the airplane before others, and precedence to disembark the airplane before others too. Quieter Environment On commercial airplanes, engines are on the wings which are in the aft of first class. Hence first class is quieter, which is a better experience. Low Turbulence ...


66

In general, flights get cancelled when arriving flights are delayed or themselves cancelled. Your flight needs three critical things to depart on time, or at all: an airplane, flight + cabin crew, and weather that meets requirements Aircraft may not arrive due to weather diversions (couldn't land with fuel on hand, etc). If there's no airplane, your flight ...


62

They just don't really fly them any more. All things considered history has a big impact on this. 13 hours is by comparison fairly short when it comes to long distance flying, historically speaking. Early aircraft that flew much slower than today's jets were built more like trains than the modern planes we have now. They had dining areas, berths, saloons, ...


61

"Sterile cockpit" doesn't mean abject silence; it means no idle chitchat. An issue relating to the safety of passengers is not idle chitchat, so it can be discussed at any time during the flight.


58

As an aircraft mechanic at a major airline, I think I can answer this pretty well. It wouldn’t be hard at all. All I have to do is wait for an aircraft move. This could be to bring a plane into the hangar or just to move it from one gate to another. I could simply volunteer to taxi the aircraft, which wouldn’t be unusual at all. At my airport, we have to ...


58

Because it's the Captain's plane, for all intents and purposes. This is exactly the same for many other industries - in particularly shipping (as in boats) and haulage (as in trucks). Similar to planes, ships and boats have captains and they are all fundamentally and legally responsible for everything that happens on that mission. And, likewise, a truck ...


57

The sprays are (usually) insecticides used to prevent the spread of invasive species and diseases. The process of ‘disinsection’ is required under the International Health Regulations of the World Health Organization (WHO) on flights to and from certain destinations to prevent infectious and contagious diseases carried by insects and other volatile ...


56

My experience, speaking as a pilot who had to retire in 1999 from a small 747 carrier when the US age 60 rule was in effect, was that NONE of us close to retirement wanted to retire. More often than not, the attitude was, "It's hard to believe they actually pay us for this." We didn't want to quit; we were at the top of our game; the world was our playground....


56

Fuel Quantity Unlike smaller fighter jets, you would need to offload a substantial quantity of fuel. For a B777, you're looking in the range of 60 tonnes of fuel for half a tank. The boom of a KC-135 (faster than a basket) can do around 3 tonnes a minute. The math comes to then 20 minutes of aerial refuelling. The KC-46 can do perhaps 180 tonnes, so you ...


56

consider if you Google a flight number you can see the flight status, imagine if the number was from a past crash, you might for a moment think the one you're looking up had crashed


55

Aircraft design has not changed that much in the last 10 years. In fact, most aircraft in production 10 years ago are still in production. The cargo holds in typical airliners are indeed pressurized. Take a look at a cross section of an airliner (A380 here): The round shape of the fuselage outline is very efficient at withstanding pressure. Because of that,...


55

I have flown in sleeper class with British Airways flying overnight from Toronto to LHR. It was an expensive luxury which started out great, but when fully reclined the bed is not exactly flat and, if you sleep on your side, there are definite pressure points on the hips and knees. That made it rather uncomfortable after a few hours. Rather than arriving ...


55

In the US they do very similar theater when a pilot needs to relieve himself. There is an announcement that nobody is allowed to come forward, and grim looking flight attendants are blocking the aisles with coffee trolleys. The details surely depend on the airline. Each of these procedures goes back to some bad incident. The cockpit doors are locked since 9/...


53

The "headset man" is a wing walker, and he is there for a reason - he is not just someone who needs a ride to where the aircraft is being pushed to. Essentially, he is an extra pair of eyes for the tow driver. He needs be able to see everything going on around the aircraft to avoid collisions with other aircraft or stationary objects. This task cannot be ...


53

Price, commonality, and size choice. A very large proportion of an aircraft's cost is in design and certification. It's followed by the engines, the avionics, and the fuselage. Not much cost can be removed from an aircraft by removing the passenger-specific elements of design. That is done in freighter versions. Freighter models like the 747-8F already ...


52

The scenario you're asking about is common. Let's say that your Delta 158 from South Korea to Detroit is running several hours late, and the decision is made to operate the A320 DTW-BOS on time. ATC doesn't accept having two aircraft flying with the same callsign at once due to exactly the sort of confusion you suggest, so something has to change. What ...


50

Fuel The fuel consumption of the A380 is about 11 metric tonnes per hour. With a fuel price of \$1000 per metric tonne, this results in \$11000 per flight hour. Amortization An A380 will cost about \$350M. The aircraft will be used for about 25 to 30 years, but let's assume the amortization period is about 20 years with a residual value of \$50M. With an ...


48

It allows them to do a run-up test of the engines without blowing debris at other parked aircraft, people, or things on the ground. [Credit to Ralph J] The walls have a structure that allows the noise of engine run-ups to be absorbed as well. Engine run-ups, especially multi-engine run ups, can be very loud. You can read more about IAC-Acoustics ground ...


47

Let's see what the savings are: A mid-sized airliner carries maybe 20% of its mass in fuel. This fuel has an energy density of 43 MJ per kg. Of that chemical energy at most 40% is converted into useable work. Heck, let's make this 25% so we are really conservative. Thus, the energy for the whole trip is $$E_{\text{trip}} = 0.2 \cdot 0.25 \cdot 43,000,000 \, ...


46

The airplanes can't depart without the minimum crew, which means 2 pilots, or 3 if there is a Flight Engineer. The airlines have "Reserve" and "Ready Reserve" types of duty to cater to this, and pilots will be scheduled for one or the other at different times (depending on seniority and what they bid for). Reserve is on-call at home, with ...


43

Farhan did an excellent job explaining the answer from a creature comfort perspective, but let me explain why from the standpoint of safety and public perception of said safety. Firstly, the difference between the front and the back isn't as stark as the red and green colors might imply. As your graph shows, the survival rate in the front is 49%, and the ...


43

I have occasionally asked passengers to do the same thing. I have also asked for window shades to be lowered. The reason is usually because the APU was not working and the ground air conditioning was not doing a good job or was unavailable. Without the APU the aircraft's airconditioning can not work and engine starting relies on a ground air source to ...


42

The cockpit of some airliners lacks a lavatory. Cockpit layout from AviationKnowledge.wikidot This is discussed in Skybrary: Flight Deck Security Locked Door Flight Safety Issues ... Physiological Need. Naturally, the need for flight crew to use toilets, access designated crew rest facilities or be supplied with food and drink, requires access ...


42

Retiring flight numbers after crash is mainly done to prevent the flight evoking negative emotions among future passengers. You don't want the flight number to conjure up images of crash while booking tickets, especially in when you type the flight number and google shows up the wreckage just below the flight data. Also, it would be quite insensitive, with ...


41

The overwhelming majority of major airlines do lease at least some of their aircraft. And most airlines who choose to buy do not end up paying that full price tag. In the case of Easyjet, around half their fleet is leased (as of 2013). Leasing allows airlines with weak balance sheets or with poor future prospects to increase capacity without locking capital....


41

They do in fact exist, though they often use smaller helicopters. A Google search on the term "heli taxi" yields thousands of results, and while a lot are probably irrelevant, the first few pages give hundreds of operators around the world, ranging from companies ferrying passengers between airports and major cities to companies servicing oil platforms at ...


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