She added that the average transport aircraft in the mid-1970s had more than 100 cockpit instruments and controls, and the primary flight instruments were already crowded with indicators, crossbars, and symbols.
Det vanliga trafikflygplanets förarkabiner under mitten av 1970-talet innehöll mer än 100 instrument och reglage och de primära flyginstrumenten var redan fyllda av indikatorer, korsreferensinstrument och symboler.