You're right, I'm shooting digital. I have never managed to get proper scans from my negatives, so I switched to digital photography.
The pictures were taken with a D60 and a 75-300 mm lens (plus the x1.6 crop factor of the camera). Most pictures were not taken with full zoom, for side-views of widebodies, a 100-150 mm zoom would be o.k.
By the way, all photos have been taken between 7:00 and 9:00 in the early morning. Light is not perfect them, the planes are almost flying out of the sun when approaching runway 28, but despite that, I think the results came out pretty nice.