Grosse Ile Municipal Airport (ICAO: KONZ, FAA LID: ONZ) is two miles south of Grosse Ile, in Wayne County, Michigan. It is owned by the Township of Grosse Ile.[1] The Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021 categorized it as a local reliever airport facility.[2]

Grosse Ile Municipal Airport
IATA: none ICAO: KONZ FAA LID: ONZ
Summary
Airport type	Public
Owner	Township of Grosse Ile
Serves	Grosse Ile Township, Michigan
Elevation AMSL	591 ft / 180 m
Map
ONZ Show map of Michigan ONZ Show map of the United States
Runways
Direction Length Surface ft m 4/22 4,846 1,477 Concrete 17/35 4,425 1,349 Concrete
Statistics (2006)
Aircraft operations 52,820 Based aircraft 88
Source: Federal Aviation Administration[1]

Most U.S. airports use the same three-letter location identifier for the FAA and IATA, but Grosse Ile Municipal Airport is ONZ to the FAA and has no IATA code.[3]

History

In 1929 the airport opened as Naval Reserve Air Base Ile, with a training school, seaplane base and dirigible hangar. In 1930 Thomas Towle used the hangars to build his Towle TA-3 diesel powered amphibian.[4] Renamed as Naval Air Station Grosse Ile during World War II, the installation operated until 1969, when it was closed and turned over to the Township in 1971 for use as a general aviation airport. A memorial garden sits directly behind Township Hall, the former Hangar One, to honor the men and women who served in the armed forces at the Naval Air Station Grosse Ile.

The airport taxiways are getting a major renovation that should be completed next year^[when?].

On the evening of September 25, 2018 an EF1 tornado, one of a three tornado outbreak in the area, crossed the airfield at about 9:00 PM local time.[5]

Facilities

The airport covers 607 acres (246 ha) and has two concrete runways: 4/22 is 4,846 x 100 ft (1,477 x 30 m) and 17/35 is 4,425 x 75 ft (1,349 x 23 m). In 2006 the airport had 52,820 general aviation aircraft operations, average 144 per day.[1]

The airport is reached by taking Jefferson Street to the Grosse Ile Parkway and turning right onto Meridian Road. Continue on Meridian Road and turn right onto Groh Road. Watch for the Township Hall sign on the left (about 200-250 yards), which marks the entrance to the parking lot. The airport offices are on the second floor.

References

External links

• Official website
• Historic American Engineering Record (HAER) No. MI-93-A, "Grosse Ile Municipal Airport, Hangar No. 1, Meridian & Groh Roads, Detroit, MI", 13 photos, 11 data pages, 2 photo caption pages
• "Michigan Airport Directory - ONZ" (PDF). (42.6 KiB)

• Resources for this airport:
  • FAA airport information for ONZ
  • AirNav airport information for KONZ
  • FlightAware airport information and live flight tracker
  • NOAA/NWS weather observations: current, past three days
  • SkyVector aeronautical chart, Terminal Procedures