1975-02-01

Whither All Weather, An Airline Engineer's Point of View 750600

A brief listing of major elements of the ground, airborne and other elements of the All Weather Landing System is presented. The chronology of growth in the use of this system by a major trunk airline in the last decade is reviewed. Problems considered by the author to be basic to further deployment and development of the system are discussed and tentative solutions to these problems are suggested, namely:
  1. 1.
    Continuous recording and public dissemination of Runway Visual Range data for all Category II and III periods at existing and proposed runways of these Categories is suggested to provide the most cost-effective basis for decisions regarding further deployment of ILS systems and MLS systems.
  2. 2.
    It is recommended that an industry group be convened to review and, probably, revise certification requirements for aircraft intended to operate below Category II minima in order to break the stalemate presently inhering in those activities.

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