Found this info on the US Airways site
http://www.usairways.com/awa/content/traveltools/baggage/specialitems.aspxFirearms
US Airways will allow passengers to transport firearms in accordance with Federal Law.
Items of shooting equipment will be accepted as checked baggage only.
A passenger who presents baggage containing a firearm must declare and demonstrate that the weapon is unloaded.
Firearms must be packed in a manufacturer’s hard–sided container specifically designed for the firearm, a locked hard–sided gun case, or a locked hard–sided piece of luggage. Handguns may be packed in a locked hard–sided gun case, and then packed inside an unlocked soft–sided piece of luggage. However, a Conditional Acceptance Tag must be used in this case.
Baggage containing firearms must be locked at all times and the key or lock combination retained by the passenger.
A Firearm Unloaded Declaration form (available only at the airport) must be signed and placed inside the bag or gun case.
Checked ammunition may not exceed 11 lbs/5 kg per container. Ammunition must be packed in the original manufacturing package or constructed of wood, fiber, plastic, or metal and provide separation for cartridges. Ammunition may be checked in the same piece of luggage as a firearm. No additional documentation is required.
There is no limit to the number of items contained in rifle, shotgun or pistol case, up to 50 lbs/23 kg, 62 in/157 cm in maximum.
Hope this helps
