File:Pulsating visual approach slope indicator.png
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English: Pulsating VASIs normally consist of a single-light unit projecting a two-color visual approach path into the final approach area of the runway upon which the indicator is installed. The “on glidepath” indication is a steady white light. The “slightly below glidepath” indication is a steady red light. If the aircraft descends further below the glidepath, the red light starts to pulsate. The “above glidepath” indication is a pulsating white light. The pulsating rate increases as the aircraft gets further above or below the desired glideslope. The useful range of the system is about four miles during the day and up to ten miles at night. |
| Date | |
| Source | Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), chapter 14, page 14 |
| Author | Federal Aviation Administration |
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This image or file is a work of a Federal Aviation Administration employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain in the United States.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 00:10, 31 July 2023 | | 3,318 × 952 (1.71 MB) | 痛 (talk | contribs) | Uploaded a work by {{label|Q335357}} from ''Pilot's Handbook of Aeronautical Knowledge'' (FAA-H-8083-25C), chapter 14, page 14 with UploadWizard |
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