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Bendix/King KLN 89B General Aviation GPS System

Bendix/King KLN 89B General Aviation GPS System. Meghan Myers. Initial Usability Problems. Subtle indication of being off course. Task Analysis. Three tasks Setting a location for direct-to navigation Searching Airport Directory Entering a flight plan Correct Actions include

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Bendix/King KLN 89B General Aviation GPS System

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  1. Bendix/King KLN 89B General Aviation GPS System Meghan Myers

  2. Initial Usability Problems • Subtle indication of being off course

  3. Task Analysis • Three tasks • Setting a location for direct-to navigation • Searching Airport Directory • Entering a flight plan • Correct Actions include • Using knobs and buttons for multiple actions • Entering and exiting modes • Viewing multiple screens on the same page

  4. User Testing • Four users • Two MHCI students • Two pilots • Two types of problems • Page indicator goes unnoticed • Text entry mode confuses users

  5. Solution Current page is indicated by its label (not a bar on the screen) Knobs used only to navigate between and within pages (no more text entry or moving the cursor) Cursor is moved via its own buttons, positioned close to text-entry keys Text Entry is handled by alpha-numeric keys (no mode required)

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