What's the interest rate on this account? <a href="http://combinedev.com/app/zylix-phone-number-d0ea.pdf">zylix</a>  Delta plans to test the tablets on its Boeing 757s and 767s, which are flown by the same group of pilots. The airline is hoping for Federal Aviation Administration approval next year to use the tablets throughout a flight, and it hopes to be using the devices on all of its other planes by the end of next year.