It's official. Guinness World Records validated the flight (see link under Flight 1).
Two flights were achieved to demonstrate that multi-rotor aircraft can stay in the air carrying a payload for a long period of time. While 20 minute flights were considered long in 2014, these demonstration flights show that 1 hour flights can be the norm. Imagine the…Continue
1 hour 20 minutes - APM 2.5 takes the world record for Multi-Copter Duration of Flight powered by a rechargeable battery. [note: other records exist for hover]