What all priviliges will my german shepherd dog have once he is a trained and registered service dog?
If I was told correctly by someone, I understand that he should be able to go into a store or restaurant if needed. Is that correct? What about air traveling? Would he be able to sit with me or will he still have to sit underneath the plane where most dogs go?

The dog himself will have no privileges, however, if you are disabled, generally your service dog would be permitted everywhere you are allowed as a member of the general public, but there are a few exceptions. It is an important distinction to note though that it is the handler who has access rights and not the dog. A service dog without his disabled handler has no particular access rights of his own and neither does a person who is not disabled, even if the dog is trained as a service dog.
In the U.S., according to the Department of Justice’s Business Brief concerning Service Animals, business owners/managers can ask 2 specific questions. 1) Is this a service dog required because of a disability? and 2) What task(s) is the dog trained to perform? If these questions are not appropriately answered, the business may exclude the animal, but not the person.
Though service animals of all kinds can legally accompany their disabled handler almost anywhere the handler goes, they can be excluded from areas where their presence would constitute either a fundamental alteration of goods and services available for all or a direct threat to safety. Examples where a service animal might be excluded include:
-Sterile rooms, such as operating rooms, some areas of emergency rooms/departments, some ICU rooms, some ambulances, some delivery rooms (on a case-by-case basis)
-Clean rooms where microchips are manufactured
-Places where food is prepared (though they cannot generally be excluded from dining areas where food is present) (by order of most health departments)
-Open air zoological exhibits, such as open air aviaries (at the zoo’s discretion)
-Churches (at the church’s discretion)
-Native American Tribal Council Chambers (at the council’s discretion)
-Federal Courts (at the judge’s discretion)
-Private clubs (at the club’s discretion)
-Private homes (at the home owner’s discretion)
The most reliable source of information on this topic would be to call the United States Department of Justice’s Americans with Disabilities Act Hotline toll-free at 800-514-0301 (voice) or 800-514-0383 (TDD).
Air Craft are covered under a different law, the Air Carrier Access Act. If your disability is psychiatric, you are required to carry current documentation from a mental health professional stating you disabled by mental illness and your dog is trained as a service dog. For any other disability, it’s pretty much the same as it is for public access.
Airlines are supposed to allow service animals to travel with their disabled handlers in the cabin of aircraft whenever possible. Floor space is very limited. If your dog cannot fit in the space allotted for your seat and there is no other place on the plane where you can be seated and both fit, then the airline can offer to ship your service dog as cargo, sell you a ticket for a second seat, or bump you for a later flight that is not full.
Your German Shepard will be able to fight and protect people and it will be a police dog. Police Dogs can be in wars.
Yes as long as he has his work vest on no business can deny him entrance with you and when flying he will be allowed on the plane with you to lay in front of your feet.
A service dog is able to accompany their owners anywhere that customers are allowed in public places.
In airplanes, they are able to travel with their owners.
In restaurants, they are able to sit at (preferably under) the table.
He should be allowed into all stores in which customers are typicalyl allowed.
The dog itself never has any rights or privileges.
It is the disabled handler who has the right to be accompanied by a properly trained and behaved service dog. If you do not have a disability that the service dog alleviates, then you cannot take your dog into public venues where pets are not allowed.
There is no lawful requirement for certification or registration. If someone is telling you that they can "certify" your dog as a "service dog", then you are being lied to and ripped off.
First and foremost, you must be considered disabled, under the eyes of the law, to have and use a service dog. Second, the dog must be trained in work or tasks that alleviate your disability, usually a 18-24 month process that is very involved and demanding. Just "being there" does not count. Third, it is the person who has the rights, never the animal.