Why turn off the electronic plane?
"None of the rule of aviation security was invented simply so – for each of them there were objective reasons. As an example, you can bring a ban on fluid (with certain exceptions) in hand baggage. It was introduced after the explosive mixture was prepared directly on board from separately carried away ingredients.
But with the development of aviation equipment, some of these reasons ceased to be relevant. For example, a ban on the use of mobile devices was associated with the fact that navigation equipment was not enough protected from external interference. Since this rule has been introduced, the equipment has become much more perfect, and numerous studies have shown that the included electronic devices do not affect modern navigation devices.
The European Aviation Security Agency (EASA) officially abolished outdated prescription, and advanced airlines of the world promptly introduced positive innovations on their routes.
In order for airlines to do this, new rules must be approved at the country level. For example, for Finland, they were approved by the Finnish Safety Transport Agency (Trafi). Part of the airlines while maintained this ban (mainly due to inertia), but its widespread cancellation is only a matter of time.
It is worth noting that a number of airlines canceled this rule with certain conditions: for example, during take-off and landing, you can use electronic devices for reading or games, but I can not use headphones: this is explained by the fact that passengers may not hear important ads of flight attendants.
As for the requirement to raise the winds of the portholes at the time of take-off and landing, the reasons here are somewhat. First, through windows, passengers may notice a non-standard situation overboard aircraft (for example, smoke or fire) and report this crew. Secondly, it is necessary that the passenger’s eyes are adapted to natural lighting, since in the event of an emergency, in which it is necessary to immediately leave the plane, there should be no sharp contrast between the lighting in the cabin and beyond. Finally, with a tight landing, the curtain may break, and there is a risk that sharp plastic fragments are embraced by passengers, so it is safer to remove it "