Parrot AR.Drone Repairability: 9 out of 10 (10 is easiest to repair).

The battery and upper case come off easily without removing a single screw.

Almost everything is attached via ribbon cable connectors and screws, making replacement much more feasible.

Parrot provides replacement parts and repair videos for common problems. Repair wouldn't be very easy without both of these.

The c-clips on each propeller assembly are very hard to remove without the correct tool.

It's a pain to reapply adhesive after removing all the adhered parts.