The engines have flown for 50 years on seven different launch vehicle types, including Saturn I, Atlas Centaur, Atlas 3, Atlas 5, Titan 3E, Titan 4A/B, and Delta 3. AV-051 was ninth Atlas 5 of the year, a record for Atlas 5. It was also the third Atlas 5 of the year to fly from VAFB. Vehicle Configurations LEO Payload (metric tons) (185 km x 28.5