From EAA web site
http://members.eaa.org/home/govt/issues/samateur_built_operating.asp:
(15) This aircraft is prohibited from aerobatic flight; i.e., an intentional maneuver involving an abrupt change in the aircraft's attitude, an abnormal attitude, or abnormal acceleration not necessary for normal flight.
EAA Position: If at the time of the initial aircraft certification inspection you tell the FAA Inspector or DAR that your aircraft is not designed, constructed or capable of aerobatic flight, then you will receive this limitation. If not, see the following limitation.
(16) This aircraft may conduct aerobatic flight in accordance with the provisions of ? 91.303. Aerobatics shall not be attempted until sufficient flight experience has been gained to establish that the aircraft is satisfactorily controllable and in compliance with ? 91.319(b). The aircraft may only conduct those aerobatic flight maneuvers that have been satisfactorily accomplished during flight testing and recorded in the aircraft maintenance records by use of the following or a similarly worded statement: "I certify that the following aerobatic maneuvers have been test flown and the aircraft is controllable throughout the maneuver's normal range of speeds and is safe for operation. The flight tested aerobatics maneuvers are: ____________, ____________, ____________, and ____________."
EAA Position: If at the time of the initial aircraft certification inspection you tell the FAA Inspector or DAR that your aircraft is designed, constructed and capable of aerobatic flight, then you will receive this limitation. As this limitation states, you are not authorized to attempt aerobatic maneuvers until you have "proven" them safe per FAR 91.319(b) while in a test flight phase. EAA strongly recommends that you do not perform these tests during the initial 10, 25 or 40 hour test flight period noted in limitation b(3), above. The initial test flight period is designed to allow you sufficient time to prove the aircraft is capable of normal flight. Once you have met all other test flight requirement, then move into this phase. NOTE: FAR 91.305, FAR 91.303, and the other above mentioned test flight limitations apply during these flight tests. Also, you should not attempt aerobatics or violent maneuvers until sufficient flight experience has been gained to establish that the aircraft is satisfactorily controllable. During continuation phase (Phase II) you may only perform those aerobatic maneuvers which you have completed during this test flight phase and have been recorded per the required logbook entry. This does not mean that you are forever limited to only those maneuvers initially recorded, because at any time you can place yourself back into this test flight program and add additional aerobatic maneuvers. As with any portion of your test flight phase, a FAA Inspector or DAR may request to witness aerobatic maneuvers if he/she deem it necessary.
