My airport card stopped working at random. Often when i moved the computer. Sometimes it worked to shut off the computer, open and close the lid a few times and start it again to get it working so i suspected a glitch somewhere and the cable was cheap so i thoughti might as well try changing it.
Very easy install, just unscrew the bottom cover and pop out the old cable and in with the new one.
If your airport card is failing this might be the cause. The fix is cheap enough to do even if it might not solve the problem.
Phillips #00 Screwdriver
MacBook Pro 15" Unibody (Mid 2010) Airport/Bluetooth Cable