It was for some cargo airline that used to charter for FedEx called Airgo based in Dallas. Its callsign was Air Dallas. He's flown quite a few planes, but got there too late to even flight engineer on teh DC-8, or fly the L-1011. But he did fly the MD-11, 727, 737-200/300, 767, 757,  and DC-9 series (including MD-series). His favorite is the 767, but the 727was a nice flying plane as well. He says the 767 has dynamics much liek the Beechcraft Baron, much liek our family has.