Cass Lake-Cove Island Seaplane Base
51MI has 1 runway. The longest is 9/27 at 2,000 ft × 100 ft (water).
FAA NASR data, cycle 2026-09-03
51MI field elevation is 990 ft MSL. The standard traffic pattern altitude at 51MI is 1,990 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
Check 51MI against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 51MI is a non-towered airport.
51MI has 1 runway (9/27). The longest runway is 2,000 feet.
51MI uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,990 feet MSL at a field elevation of 990 feet.
51MI (Cass Lake-Cove Island Seaplane Base) has a field elevation of 990 feet MSL.
51MI (Cass Lake-Cove Island Seaplane Base) is located in Pontiac, MI.