Found at the bottom of page 7.http://www.handgunlaw.us/states/arizona.pdf
In Arizona the law does not require you to inform an Officer you have a permit/license to carry if approached by that Officer on any type of official business. But Arizona law does state the following:
13-3102. Misconduct Involving Weapons; Defenses; Classification; Definitions
1. Carrying a deadly weapon except a pocket knife concealed on his person or within his immediate control
in or on a means of transportation:
(b) When contacted by a law enforcement officer and failing to accurately answer the officer if the officer asks whether the person is carrying a concealed deadly weapon; or...
M. For the Purposes of This Section:
1. "Contacted by a law enforcement officer" means a lawful traffic or criminal investigation, arrest or detention or an investigatory stop by a law enforcement officer that is based on reasonable suspicion that an offense has been or is about to be committed.
So if an Officer Ask if you have a firearm by law you must give the Officer an answer.