Q: Why is my ipad no longer printing to AirPrint?  I can print from my iPhone...

See requirements for AirPrint (http://support.apple.com/kb/ht4356):

If your printer supports AirPrint but does not work then:

Your printer might need a firmware update

Your printer must be on the same WiFi network

Your router must support Bonjour (Zero-configuration networking).

For troubleshooting:

Turn Off iPad, WiFi router (remove from power), and Printer (remove from power).

Turn on WiFi router

Wait 30 seconds

Turn on printer

Wait 30 seconds

Turn on iPad

Try to print.

If you need more help then what printer do you have?

AirPrint Setup and Troubleshooting

http://www.apple.com/support/ipad/assistant/airprint/

How to print from your new iPad using AirPrint

http://www.imore.com/print-ipad-airprint

AirPrint Basics

http://support.apple.com/kb/ht4356

 Cheers, Tom

Thanks Jim,

I had already followed the three actions (turn off Wi-Fi, printer and iPad) but Airprint still didn't work.  I then followed your Instructions to also remove the Wi-Fi and printer from the power and BINGO! Airprint is working!