What are the main differences between the SDF and the localizer of an ILS?

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How can a pilot determine if a Global Positioning System (GPS) installed in an aircraft is approved for IFR enroute and IFR approaches?

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Hand-held GPS systems, and GPS systems certified for CFR operation, may be used during IFR operations as

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(Refer to figure 73.) Which sequence of marker beacon indicator lights, and their respective codes, will you receive on the ILS RWY 6 approach procedure to the MAP?

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(Refer to figures 96 and 97.) To which aircraft position(s) does HSI presentation “B” correspond?

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