Detailed information (From AOPA's 1999 Airport Directory):
Airport identifier: IWI
ICAO identifier: KIWI
Lat/Long: N43-57.67 W069-42.80
Field Elevation: 68
(the recent sectional chart says 70)
Pattern Altitude: 1000 feet MSL
Unicom: 122.8 MHz
ASOS: 135.725 MHz or by telephone 207-882-8094

Runway 07-25 is 3400 feet long and 75 feet wide. The runway is marked with medium intensity lights. Runway 25 has Runway End Identifier Lights (REILs), and both runways have Precision Approach Path Indicator Lights (PAPIs). All these lights are pilot-controlled on the Unicom frequency, 122.8 MHz. The rotating beacon is located next to the ramp area and operates from sunset to sunrise. Both runways are served by GPS approaches. An NDB approach to Runway 25 is also available.

The airport has two windsocks, one within a segmented circle. These windsocks have a mind of their own, and will often point in two different directions! For additional assistance in determining wind direction, the airport has an Automated Surface Observating System (ASOS) on frequency 135.725 MHz.

The FBO, Wicked Good Aviation, sells Phillips 66 100 Low-Lead and Jet-A fuels and provides airport advisory services on the Unicom frequency. A courtesy car is available on a first come-first served basis for short trips into town. The ramp area has approximately thirty tiedown spots.