Three Lakes Municipal Airport
40D has 1 runway. The longest is 3/21 at 3,400 ft × 120 ft (turf).
FAA NASR data, cycle 2026-09-03
40D field elevation is 1,636 ft MSL. The published traffic pattern altitude at 40D is 2,440 ft MSL (800 ft AGL).
FAA NASR data, cycle 2026-09-03
CTAF 122.7 MHz — 40D is non-towered; self-announce position and intentions on CTAF.
Check 40D against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 40D is a non-towered airport. The CTAF frequency is 122.7 MHz.
40D has 1 runway (3/21). The longest runway is 3,400 feet.
40D publishes a traffic pattern altitude of 800 feet AGL — about 2,440 feet MSL — which is not the standard 1,000 feet.
40D (Three Lakes Municipal Airport) has a field elevation of 1,636 feet MSL.
40D (Three Lakes Municipal Airport) is located in Three Lakes, WI.