> only because they had such an engine that the 747 became possible. Many engine manufacturers were experimenting with high-bypass ratios; Honeywell, Pratt & W

> only because they had such an engine that the 747 became possible. Many engine manufacturers were experimenting with high-bypass ratios; Honeywell, Pratt & Whitney, Rolls-Royce. GE was just first to production. If they hadn’t done it, someone else would have.