No major has been approved for the use of IPads or any other laptop for navigation data. The issues are: 1) that the Feds want to have each pilot have his own data, not share and 2) the Feds will not approve a device that doesn't have an STC'd mounting mechanism to prevent becoming a moving object in the cockpit.

Some non-scheds or biz jet types are using them for nav data, but they are securing them to their knees like the 1950's style knee boards.