AOL travel website Gadling takes a look at the American Airlines iPad Electronic Flight Bag that received initial FAA approval more than a year ago. The airline's pilots can replace 40 pounds of company manuals and maps with a pair of iPads (one for each pilot), along with a long-life battery to keep the iPads powered for 24 hours. Because both pilots are carrying iPads with backup batteries, the FAA feels this is as redundant as paper manuals. So far American has approval for the 777, 737, MD-80 and is just awaiting approval for the 757/767 fle