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Aviation History
1951
1951 - 0866.PDF
4 MAY 195 I FLIGHT B-OAC The de Havilland Comets which will shortly be flying in the service of the British Overseas Airways Corporation will be equipped with the Sperry Zero Reader. This great advance in the simplification of instrument flight has a special appeal to airlines whose reputation relies on punctual and reliable operation even under adverse weather conditions. The Zero Reader is an automatic flight indicator which electronically combines attitude, heading, altitude and radio information on a single indicator. The co-ordinated information is presented on a vertical and horizontal needle indicating to the pilot control movements required to achieve a selected flight plan. V It eliminates the fatigue and lost time of mental co-ordination of flight instrument readings. It simplifies the pilot's operations during the vital period of approach. It makes possible the introduction of reduced minimums with a consequent decrease in overall operating costs. All flying from take-off to landing is done by reference to the Zero ,Reader indicator; thus there is no change-over to a different form of presentation during the critical portion of the flight, the final approach. The SPERRY ZERO READER Master Flight Instrument
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