Towered · Class D surface area
Grissom Arb (KGUS) radio calls
Peru, INICAO KGUS · FAA GUS
Grissom Arb is a towered airport in Peru, IN. You will taxi with Ground on 128.425 and work Grissom Tower on 133.7, after listening to the ATIS on 132.55. The tower operates 1230-0400Z++, CLSD FED HOLS. local.
The airport has a Class D surface area: two-way radio communication with the tower must be established before entering. Published hours: CLASS D SVC 1230-0400Z++, CLSD FED HOL; OTHER TIMES CLASS G.
Frequencies
| ATIS | 132.55 |
|---|---|
| Clearance Delivery | 128.425 |
| GroundGrissom Ground | 128.425 |
| TowerGrissom Tower | 133.7 |
Airport
- Runways
- 05 · 23
- Elevation
- 811 ft
- Tower hours
- 1230-0400Z++, CLSD FED HOLS. local
- Position
- 40.648, -86.152
Towered airport with a Class D surface area
Sample calls at KGUS
Grissom Arb has a Class D surface area: establish two-way communication with the tower before entering (AIM 3-2-5 b 3). A reply that uses your call sign, even "standby", establishes it; "aircraft calling, standby" does not. The calls below use runway 05; the tower assigns the runway in use on the day.
The aircraft is the AIM’s own example, Cessna Three One Six Zero Foxtrot; the squawk codes, altitudes and headings are illustrative. Frequencies, station names and runway numbers are this airport’s, from the FAA data.
- Listen to the ATIS on 132.55 first and note the letter; "with Information (letter)" on your first call lets the controller skip the weather (JO 7110.65 3-10-1).
- YouGrissom Clearance, Cessna Three One Six Zero Foxtrot, at the ramp with Information Alpha, VFR to the north, request clearance.
- ATCCessna Six Zero Foxtrot, Grissom Clearance, maintain VFR at or below two thousand five hundred, departure frequency one two zero point one, squawk four six one two.
- YouAt or below two thousand five hundred, departure one two zero point one, squawk four six one two, Cessna Six Zero Foxtrot.
- YouGrissom Ground, Cessna Three One Six Zero Foxtrot, at the ramp with Information Alpha, request taxi, VFR departure to the north.
- ATCCessna Six Zero Foxtrot, Grissom Ground, runway zero five, taxi via Alpha, hold short of runway zero five.
- YouRunway zero five, taxi via Alpha, hold short of runway zero five, Cessna Six Zero Foxtrot.
- The runway, any clearance onto a runway and every hold-short instruction are read back (AIM 4-3-18 a 9). Stay on Ground through the run-up and switch to Tower when ready (AIM 4-3-14 a).
- YouGrissom Tower, Cessna Six Zero Foxtrot, holding short runway zero five, ready for departure, northbound.
- ATCCessna Six Zero Foxtrot, Grissom Tower, runway zero five, cleared for takeoff.
- YouRunway zero five, cleared for takeoff, Cessna Six Zero Foxtrot.
- Inbound: call the tower about 15 miles out, before the Class D boundary (AIM 4-3-2 a).
- YouGrissom Tower, Cessna Three One Six Zero Foxtrot, one five miles north, three thousand, with Information Bravo, landing Grissom.
- ATCCessna Six Zero Foxtrot, Grissom Tower, enter left downwind runway zero five, report midfield downwind.
- YouEnter left downwind runway zero five, report midfield, Cessna Six Zero Foxtrot.
- YouGrissom Tower, Cessna Six Zero Foxtrot, midfield left downwind, runway zero five.
- ATCCessna Six Zero Foxtrot, runway zero five, cleared to land, wind two seven zero at eight.
- YouRunway zero five, cleared to land, Cessna Six Zero Foxtrot.
- The wind is information: acknowledged, not read back. Exit at the first available taxiway or as told, taxi clear of the hold-short markings, and change to Ground only when the tower says (AIM 4-3-21).
- ATCCessna Six Zero Foxtrot, exit at the next taxiway, contact Grissom Ground one two eight point four two five.
- YouExit next taxiway, one two eight point four two five, Cessna Six Zero Foxtrot.
- YouGrissom Ground, Cessna Six Zero Foxtrot, clear of runway zero five, taxi to the ramp.
If things change. The tower operates 1230-0400Z++, CLSD FED HOLS. local. Outside those hours the airport is a non-towered field: self-announce on the CTAF with the airport name first and last, and the surface area reverts to Class E or Class G as published in the Chart Supplement.
Phraseology from AIM 4-2-3; 4-3-18 a 9; 4-3-14; 4-3-21; 4-4-7 b; 4-1-18 a 3; 3-2-5 b 3; 4-3-2 a. What TowerTalk grades against →
The calls you will make here
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Frequencies, runways and airspace from the FAA National Airspace System Resources (NASR) 28-day subscription, cycle effective Sep 3, 2026. Training use only. Always verify against a current Chart Supplement and sectional chart before flight; frequencies change. TowerTalk is not affiliated with the FAA. Report a discrepancy.
