21M — Currier's Seaplane Base, Greenville Junction, ME

Non-ToweredGreenville Junction, ME • 1,028' MSL

21M WeatherLive METAR & TAF

21M has 1 runway. The longest is 18W/36W at 10,000 ft × 3,000 ft (water).

18W/36WNo runway lights · Right traffic 36W10,000 ft × 3,000 ftWater

FAA NASR data, cycle 2026-09-03

21M field elevation is 1,028 ft MSL. The standard traffic pattern altitude at 21M is 2,030 ft MSL (1,000 ft AGL).

Field elevation1,028 ft MSL

Pattern altitude2,030 ft MSL1,000 ft AGL · standard

Control towerNon-towered

FAA NASR data, cycle 2026-09-03

Check 21M against your personal minimums, plan a route to it, and see the best runway for the current wind — free.

No, 21M is a non-towered airport.

21M has 1 runway (18W/36W). The longest runway is 10,000 feet.

21M uses the standard traffic pattern altitude of 1,000 feet AGL — about 2,030 feet MSL at a field elevation of 1,028 feet.

21M (Currier's Seaplane Base) has a field elevation of 1,028 feet MSL.

21M (Currier's Seaplane Base) is located in Greenville Junction, ME.