If a pilot's aircraft experiences mechanical trouble at Oshkosh during AirVenture, who do they call for assistance?  The pilot can contact the Emergency Aircraft Repair (EAR) team.  The EAR is staffed by members of EAA Chapter 75 Quad Cities (Davenport, Bettendorf Iowa and Rock Island, Moline Illinois).  Any EAA member can serve with the EAR, but the member is required to join Chapter 75 (the member does not have to reside in the Quad Cities area).