Henry Post Army Air Field frequencies
Henry Post Army Air Field (FSI · KFSI) in Fort Sill, OK is a towered field, staffed OPR BY NOTAM.. 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 Henry Post Army Air Field — runways, frequencies, charts and live weatherWhen the KFSI tower is closed
The tower is staffed OPR BY NOTAM.. Outside those hours Henry Post Army Air Field has no operating control tower: it becomes a self announce field on 124.95, 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 KFSI airport page for the click sequence, and what to say on the radio.
Before taxi Post
- ATIS 135.425
- 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.
- Clearance 121.7
- Clearance delivery issues your IFR clearance, and at busier fields your VFR departure instructions and squawk code. Call before you request taxi, with the ATIS letter and your intended direction of flight.
Taxi & takeoff Post
- Ground 121.7
- 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 124.95
- 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 Fort Sill
- App/Dep 118.6 (VFR), 120.55 (IFR · initial contact)
- 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 124.95
- 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.
- Emergency 121.5
- 121.5 is the international emergency and distress frequency, monitored continuously. Declare on it if you are in trouble, and monitor it as a second radio when you have one free.
By procedure & sector (8 more)
| 118.6 | VFR ADZY |
|---|---|
| 229.4 | LCL/P |
| 243.0 | EMERG |
| 279.575 | CD/P, GND/P |
| 290.375 | APCH/P DEP/P (VFR), VFR ADZY |
| 306.5 | PMSV METRO |
| 322.4 | APCH/P DEP/P (IFR) |
| 354.025 | ATIS |
Every KFSI frequency, as one table
| ATIS | 135.425 |
|---|---|
| Clearance | 121.7 |
| Ground | 121.7 |
| Tower | 124.95 |
| CTAF | 124.95 |
| Emergency | 121.5 |
| App/Dep | 118.6 · VFR |
| App/Dep | 120.55 · IFR · initial contact |
Frequently asked
What is the tower frequency at KFSI?
Henry Post Army Air Field tower is 124.95, calling "Post Tower". The tower is staffed OPR BY NOTAM..
What frequency do I use at KFSI when the tower is closed?
Outside OPR BY NOTAM., Henry Post Army Air Field has no operating control tower and becomes a self announce field. Use 124.95 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 KFSI?
Ground control at Henry Post Army Air Field is 121.7. 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 KFSI?
ATIS at Henry Post Army Air Field is 135.425. Listen before your first call and report the letter you have.
What is the approach frequency for KFSI?
App/Dep for Henry Post Army Air Field is 118.6, working as "Fort Sill" (VFR). Call inbound for flight following or to begin an instrument approach.
Where do I get my clearance at KFSI?
Clearance delivery at Henry Post Army Air Field is 121.7. Call before requesting taxi, with the current ATIS letter and your direction of flight.
More about KFSI
Frequencies from FAA NASR. For planning and education only; always verify against official sources.