You've got no clue about what your talking about. The pilots replace their personal flight kits at about 40lbs each with iPads. The aircraft will still have a "backup" set of minimum pubs onboard that has always been on board, stored in the cockpit, regardless of what form of manuals the pilot carries. It is (at least at Delta) sealed in plastic to ensure its contents aren't used and misplaced. It is the so called "backup". The iPads replace the two pilot bags that you see pilots drag through airports, hanging on the back of their roll-aboard. At Delta, we stopped carrying those about a year ago, and the company provides the pilot materials at each cockpit seat in paper form, still 40 lbs each, so they reduced the waste of having 12,500 pilots carry these pubs. So at Delta, there are about 1,500 of these now, one for each of two seats across a fleet of 750 aircraft. But the weight of 80 lbs per aircraft (the pilot's company provided pubs at each seat) will be replaced with iPads.
If you recall your physics, you can not lift 80 lbs of weight to 40,000 feet without expending energy (fuel). How much energy would it take if you devised a canon that could shoot 80 lbs to that altitude and across the country? To say it costs nothing to carry these pubs as compared to carrying two iPads is true ignorance. At Delta, they have numbers for how much it costs to carry an extra can of Coke on a flight, and savings gained through lighter service trays and glassware. We fly nearly 100,000 flights per year, it all adds up very quickly. Stick to what you know. The airline industry and how it operates is clearly not on that "list".
