AircraftTroubleshooting Lear 40xr hubcap October 4, 2024 Todd's Time 3 holes, 120 degrees apart. 3.3 inches, hole center to hole center. The hubcap measures 1.0 inches tall. Inside hubcap is a spring clip. Transducer is a spade .25 inches wide. I think it is identical to a Lear 35.