Gary/Chicago International Airport frequencies
Gary/Chicago International Airport (GYY · KGYY) in Gary, IN is a towered field, staffed 0600-2300. Every frequency below is in the order you tune it, from the first call to the handoff on climb out. · Open on the map
All of Gary/Chicago International Airport — runways, frequencies, charts and live weatherWhen the KGYY tower is closed
The tower is staffed 0600-2300. Outside those hours Gary/Chicago International Airport has no operating control tower: it becomes a self announce field on 125.6, and separation from other traffic is yours, not a controller's. Report your position and intentions on entry and on each leg of the pattern.
Runway lighting is often pilot controlled once the tower closes — check the KGYY airport page for the click sequence, and what to say on the radio.
Before taxi Gary
- ATIS 134.575
- A recorded loop of the field's weather, active runway and any notices, updated hourly or whenever conditions change. Listen before your first call, and tell the controller which letter you have so they do not read it to you again.
- ASOS/AWOS 134.575
- An automated weather station reading the field conditions aloud — wind, visibility, ceiling, temperature and altimeter. It replaces ATIS at a field with no controller to record one. Get the altimeter setting before you descend below the transition altitude.
Taxi & takeoff Gary
- Ground 121.9
- Ground control owns every taxiway and inactive runway on the field. Call for taxi with your position and destination on the field. You need an explicit clearance to cross any runway, including one that is not in use.
- Tower 125.6
- Tower owns the active runways and the surrounding surface area. Call before entering the surface area inbound, and hold short until you are cleared to take off or to cross.
Departure & arrival Chicago
- App/Dep 133.1 (LUCIT arrivals)
- One radar controller working both arrivals and departures — normal at a smaller TRACON. The same frequency takes your climb out and your inbound call.
Also
- CTAF 125.6
- The common frequency pilots use to announce themselves to each other at a field with no operating control tower. Nobody is controlling traffic — you are self announcing. Report your position and intentions on entry and on each leg of the pattern, and listen well before you transmit.
By procedure & sector (5 more)
| 38.3 | ARNG OPS |
|---|---|
| 133.1 | LUCIT STAR |
| 139.6 | ARNG OPS |
| 245.7 | ARNG OPS |
| 285.6 | APCH/P DEP/P, LUCIT STAR |
Every KGYY frequency, as one table
| ATIS | 134.575 |
|---|---|
| ASOS/AWOS | 134.575 |
| Ground | 121.9 |
| Tower | 125.6 |
| CTAF | 125.6 |
| App/Dep | 133.1 · LUCIT arrivals |
Frequently asked
What is the tower frequency at KGYY?
Gary/Chicago International Airport tower is 125.6, calling "Gary Tower". The tower is staffed 0600-2300.
What frequency do I use at KGYY when the tower is closed?
Outside 0600-2300, Gary/Chicago International Airport has no operating control tower and becomes a self announce field. Use 125.6 as the CTAF and report your position and intentions — there is nobody to clear you, so separation is yours.
What is the ground frequency at KGYY?
Ground control at Gary/Chicago International Airport is 121.9. You need an explicit clearance from ground to cross any runway while taxiing, including one that is not in use.
What is the ATIS frequency at KGYY?
ATIS at Gary/Chicago International Airport is 134.575. Listen before your first call and report the letter you have.
What is the approach frequency for KGYY?
App/Dep for Gary/Chicago International Airport is 133.1, working as "Chicago" (LUCIT arrivals). Call inbound for flight following or to begin an instrument approach.
More about KGYY
Frequencies from FAA NASR. For planning and education only; always verify against official sources.