Benchmark Airport
3U7 has 1 runway. The longest is 12/30 at 6,000 ft × 100 ft (asphalt).
FAA NASR data, cycle 2026-09-03
3U7 field elevation is 5,434 ft MSL. The standard traffic pattern altitude at 3U7 is 6,430 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
CTAF 122.9 MHz — 3U7 is non-towered; self-announce position and intentions on CTAF.
Check K3U7 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 3U7 is a non-towered airport. The CTAF frequency is 122.9 MHz.
3U7 has 1 runway (12/30). The longest runway is 6,000 feet.
3U7 uses the standard traffic pattern altitude of 1,000 feet AGL — about 6,430 feet MSL at a field elevation of 5,434 feet.
3U7 (Benchmark Airport) has a field elevation of 5,434 feet MSL.
3U7 (Benchmark Airport) is located in Augusta, MT.