If an approach is being made to a runway that has an operating 3 bar VASI and all the VASI lights appear red as the airplane reaches the MDA, the pilot should

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(Refer to figure 131.) What is the landing distance available for the VOR/DME RNAV RWY 4R approach at BOS?

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(Refer to figure 136.) Which illustration depicts an “on glidepath” indication?

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(Refer to figures 42 and 42A.) What is the difference in elevation (in feet MSL) between the airport elevation and the TDZE for RWY 36L?

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(Refer to figure 138.) What night operations, if any, are authorized between the approach end of the runway and the threshold lights?

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