 Robert Campion, then company Secretary, followed Brooks as Lear Siegler's president and chief executive officer.In 1971, the company, then a major subcontractor for the Lockheed L-1011 commercial jet programs, saw its earnings plunge when the project was suspended because of problems with the jet's engine supplier, Rolls-Royce.Delays in other government projects, steep start-up costs at a modular housing factory in Hawaii, and a strike at General Motors also damaged the company's profits.