After months of tests, the Civil Aeronautics Administration last week stamped formal approval on the engines slated to power the first U.S. jet airliners. The power plants: Pratt & Whitney's J57 and J75, scheduled for 90% of the 250-odd jetliners on order (both Boeing's 707* and
Douglas' DC-8). That the J57 and J75 had passed with flying colors was fine for Pratt & Whitney. But it was one more blow to the rest of the troubled U.S. air-craft-engine industry. In a few short years, the five well-matched big companies that had competed for...
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