"22 Economic Nondiscrimination.
"c. Each fixed-based operator at the airport shall be subject to the same rates, fees, rentals, and other charges as are uniformly applicable to all other fixed-based operators making the same or similar uses of such airport and utilizing the same or similar facilities." [Someone offering maintenance services for hire at an airport is considered a fixed-based operator and they all must be treated equally. If you require insurance or an office for one, you must require all to have the same.]
"f. It will not exercise or grant any right or privilege which operates to prevent any person, firm, or corporation operating aircraft on the airport from performing any services on its own aircraft with its own employees [including, but not limited to maintenance, repair, and fueling] that it may choose to perform." [This one guarantees you the right to work on your own aircraft. However, if you aren't withholding payroll taxes and providing other benefits to the mechanic, he/she is NOT an employee. He's a freelancer.]
"g. In the event the sponsor itself exercises any of the rights and privileges referred to in this assurance, the services involved will be provided on the same conditions as would apply to the furnishing of such services by commercial aeronautical service providers authorized by the sponsor under these provisions."
"h. The sponsor may establish such reasonable, and not unjustly discriminatory, conditions to be met by all users of the airport as may be necessary for the safe and efficient operation of the airport." [That's a big, wide-open assurance that covers lots of "safety" rules.]
"i. The sponsor may prohibit or limit any given type, kind or class of aeronautical use of the airport if such action is necessary for the safe operation of the airport or necessary to serve the civil aviation needs of the public." [Another one.]
"24. Fee and Rental Structure. It will maintain a fee and rental structure for the facilities and services at the airport which will make the airport as self-sustaining as possible under the circumstances existing at the particular airport, taking into account such factors as the volume of traffic and economy of collection." [You can't give it away and if there's an opportunity to collect a fee, you should.]
"38. Hangar Construction. If the airport owner or operator and a person who owns an aircraft agree that a hangar is to be constructed at the airport for the aircraft at the aircraft owner’s expense, the airport owner or operator will grant to the aircraft owner for the hangar a long term lease that is subject to such terms and conditions on the hangar as the airport owner or operator may impose." [And here's another one that says the airport can control what goes on inside your private hangar.]
See http://www.faa.gov/airports/aip/gran...ances_2012.pdf for all 39 Federal Grant Assurances that airport operators must comply with.