Yk at first you do the 6-7 ironically to relate to the kids...then you get addicted to it. Every time someone says those numbers in that order your arms can't help themselves. They just do it. Pope Bob is not immune to this.
1 June 1972. First flight of the Aérospatiale SA 360 Dauphin (F-WDQL) at Marignane. Utility helicopter equipped with a four-bladed main rotor with a NAT hub (non-drag hinged hub) from the Gazelle and composite blades in fibreglass, carbon-coated for greater rigidity