Why the ATC is not clearing me to land?

• Make sure you are landing in the right direction. Ask a landing clearance if needed and pay attention on the runway heading. Depending on the wind direction, the take-off runway can be different from the planned runway.
• The ATC says the clearance:
• You just have triggered a FAF or a MAPT waypoint (IFR stuff)
• If not, when the distance from your plane to the airport is lower than about 2.5 miles (actually, it depends on the triggers min, max, and minimum for airport Constants)