Airspace & ChartsQuestion 49 of 100

An airport data block on a sectional chart reads: 1246 L 52. How should a remote pilot planning an operation nearby interpret this line?

a.Field elevation 1,246 ft MSL, lighting available, longest runway 5,200 ft
b.Field elevation 1,246 ft AGL, lighting available, longest runway 52 ft
c.Field elevation 1,246 ft MSL, lighting available, and 52 aircraft based there
d.Runway heading 124 degrees, lighting available, and pattern altitude 5,200 ft

Explanation

In an airport data block the first figure is field elevation in feet MSL, the letter L means runway lighting is available at least part of the night, and the last figure is the length of the longest runway in hundreds of feet, so 52 is 5,200 ft. Field elevation is always given in MSL, never AGL, which matters when converting a planned MSL altitude to height above the ground. The number of based aircraft and the traffic pattern altitude are published in the Chart Supplement, not in this line.

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