Henry Post Army Air Field Private
FSI · KFSI · Fort Sill, OK · 1,189 ft elevation · var 4E · Towered
Airport information
- ICAO / IATA
- KFSI / FSI
- Coordinates
- 34.6498, -98.4022
- Elevation
- 1,189 ft MSL
- Magnetic variation
- 4E
- Sectional chart
- DALLAS-FT WORTH
- Airport use
- Private
- Control tower
- Yes
- Tower hours
- OPR BY NOTAM.
- ARTCC
- FORT WORTH (ZFW)
- Flight service (FSS)
- MC ALESTER · 1-800-WX-BRIEF
- NOTAM facility
- FSI
- Beacon
- S-white-green (SS-SR)
- Segmented circle
- No
- Activated
- 1943/12
- Distance from city
- 1 SE
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-22
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:52 AM | 10:52Z |
| Sunrise | 06:21 AM | 11:21Z |
| Sunset | 08:50 PM | 01:50Z |
| Evening civil twilight Loggable night begins | 09:20 PM | 02:20Z |
Plan a flight from KFSI
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- S-white-green · SS-SR
- Pilot-controlled lighting
- Usually keyed on CTAF 124.95 — confirm the click sequence in the Chart Supplement ↗
Runway lighting aids — 18: 4-light PAPI (left) · 36: 4-light PAPI (left) + SALS.
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 18 · 176°
- Pattern
- left (turns left)
- TPA
- 2,200 ft MSL (≈1,000 AGL)
- CTAF
- 124.95
Enter the left downwind for Rwy 18 at 2,200 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 18/36
5,002 ft × 150 ft · Concrete (Good)- Heading
- 176° mag · 180° true
- Threshold elev
- 1,185 ft
- Markings
- precision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Threshold crossing height
- 44 ft
- TDZ elevation
- 1,188 ft
- End lights
- REIL
- Heading
- 356° mag · 360° true
- Threshold elev
- 1,166 ft
- Markings
- precision
- VGSI
- 4-light PAPI (left) (3°)
- Approach lights
- SALS
- Traffic pattern
- Left
- Threshold crossing height
- 61 ft
- TDZ elevation
- 1,187 ft
| Runway | Length | Your margin |
|---|---|---|
| 18/36 | 5,002 ft |
Communication frequencies
Tower & ground · “Post”
| ATIS | 135.425 |
| Clearance | 121.7 |
| Ground | 121.7 |
| Tower | 124.95 |
| CTAF | 124.95 |
| Emergency | 121.5 |
Approach & departure · “Fort Sill”
| App/Dep | 118.6 | VFR |
| App/Dep | 120.55 | IFR · initial contact |
ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).
By procedure & sector (8 frequencies)
| Frequency | Used by |
|---|---|
| 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 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| LAW · Lawton | VOR-DME | 109.40 | r354° / 9.2 NM |
| DUC · Duncan | VOR-DME | 111.00 | r295° / 28.8 NM |
| HBR · Hobart | VORTAC | 111.80 | r102° / 35.1 NM |
Procedures at a glance
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Ownership & management
Remarks FAA
- MISC: WX FCST AVBL 1200-0400Z++ MON-FRI, EXC HOL. REMOTE BRIEFING SVC AVBL 26 OWS BARKSDALE AFB DSN 331-2651, C318-529-2651, HTTPS://26OWS.US.AF.MIL/.
- TRAN ALERT: NO TRAN MAINT, LTD SVC. TRAN AIRCREW MUST REMAIN WITH ACFT TO PROVIDE TECHNICAL DRCT/ASSIST IN SVCG.
- AFLD MGMT OPR 1230-2100Z ++ MON-FRI EXC HOL. OTHER SVCS AVAILABLE AS PUBLISHED/NOTAM. DSN 639-4643/2023, C580-442-4643/2023, WX DSN 639-4000/4887, C580-442-4000/4887.
- MISC: WX OBSN AUTOMATED 24/7. WX OBSN AUGMENTED (AS RQR) DUR HRS WX FCST AVBL. WX OBSN VIS LTD TO 0.25 SM N AND NE WHEN SFC WX OBSN VIS SENSOR AUGMENTED.
- SERVICE - LGT: ACTVT PAPI RWY 18 ON 125.95 APCH, PAPI RWY 36 & RWY LGT OPR O/R TO APP.
- TWY A AND TWY C PCN GWT RSTD, C-130 AND LRGR MUST USE TWY B FOR RWY ENTRY & EXIT.
- 24 HR PPR ALL TRANS ACFT.
- RWY 18-36 NSTD SAFETY ARE BYD EACH END DUE TO TERRAIN GRADE, NO PAVED OVERRUNS.
- AFLD COND UNMTO WHEN AFLD MGMT CLSD.
- MISC: WIND CONES LCTED 353 FT FM RWY EDGE. RWY EDGE LTS LCTED 26 FT FROM RWY EDGE LINE.
- POTENTIAL FOR BIRD ACT NEAR POND NW OF AER RWY 18.
- HENRY POST AIRFIELD IS LOCATED WI RESTRICTED SPECIAL USE AIRSPACE R5601. CTC FORT SILL APPROACH FOR ACCESS.
- AIRFIELD LIGHTING CONTROLLED BY FORT SILL ARAC.
- TOWER OPRS HRS BY NOTAM ONLY.
- FORT SILL ARAC OPRS 24/7/365.
- RDO REQ
- 580-442-6014.
- UNSVCBL.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open KFSI in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About KFSI
Henry Post Army Air Field (FSI · KFSI) is an airport in Fort Sill, OK, at 1,189 ft MSL. It has 1 runway, the longest 5,002 ft, with a control tower. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KFSI, refreshed from the Aviation Weather Center and FAA NASR.
Does KFSI have a control tower?
Yes. Henry Post Army Air Field has an operating FAA control tower. Check the Comms & NavAids tab for tower and ground frequencies.
What is the longest runway at KFSI?
Henry Post Army Air Field has 1 runway; the longest is 5,002 ft. See the Runways tab for headings, surface, and lighting.
Where is KFSI?
Henry Post Army Air Field is in Fort Sill, OK, at an elevation of 1,189 ft MSL. Coordinates: 34.6498, -98.4022.
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