Advanced technology for its time, 4-blade rotor and pioneering EFIS
The S-76A brought a premium technology package for 1979: fully articulated 4-blade main rotor (vs. the 2-blade teetering rotor of the competing Bell 212), reducing vibration by 40% and improving passenger comfort; Sperry SPZ-7000 4-tube EFIS cockpit, the first electronic display in a production civil helicopter; dual-redundant hydraulic system; retractable landing gear reducing drag. Result: cruise of 145 KTAS (45% faster than the Bell 212) and an executive-class VIP cabin.