Henry Post Army Air Field Private

FSI · KFSI · Fort Sill, OK · Towered · Print kneeboard

Elevation

1,188 ft MSL

Longest runway

5,002 ft 18/36

Runway

Mag var

ATIS 135.425 Tower 124.95 Ground 121.7 Clearance 121.7 Approach 118.6

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Weather

METAR observed

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TAF forecast

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Sun & FAA night2026-08-03 · night begins 09:02 PM

Event	Local (CDT)	UTC
Morning civil twilight Loggable night ends	06:17 AM	11:17Z
Sunrise	06:45 AM	11:45Z
Sunset	08:34 PM	01:34Z
Evening civil twilight Loggable night begins	09:02 PM	02:02Z

Loggable night (§1.1)

09:02 PM → 06:17 AM

Night currency (§61.57)

09:34 PM → 05:45 AM

Plan a flight from KFSI

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

Past 24 hours category · wind · ceiling · visibility trends

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Winds aloft NOAA forecast · 3,000 to 53,000 ft

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Advisories

NOTAMs

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Pilot reports

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Airspace hazards

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Runways

RWY 18LEFT traffic

Heading: 176° mag · 180° true
Dimensions: 5,002 × 150 ft
TPA: 2,200 ft MSL (≈1,000 AGL) · standard
Surface: Concrete
Lights: 4-light PAPI (left) (3°)
CTAF: 124.95

More details — RWY 18

Threshold elev: 1,185 ft
Markings: precision
Threshold crossing height: 44 ft
TDZ elevation: 1,188 ft
End lights: REIL

Condition: Good. Edge lights: High. PCN 54.

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
18/36	5,002 ft

Prefer one flat page? Full runway details for KFSI → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KFSI kneeboard →

Comms & NavAids

Communication frequencies

Before taxi

“Post”

ATIS

135.425

Clearance

121.7

Taxi & takeoff

“Post”

Ground

121.7

Tower

124.95

Departure & arrival

“Fort Sill”

App/Dep

118.6 VFR 120.55 IFR · initial contact

Also

CTAF

124.95

Emergency

121.5

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

LAW 116.85 · HBR 115.85

NavAid	Type	Freq · ch	Range	Radial / Dist magnetic
LAW · Lawton	VOR/DME	116.85 · 115Y	Low	r354° / 9.2 NM
HBR · Hobart	VORTAC	115.85 · 105Y	Low	r102° / 35.1 NM

Prefer one flat list? All KFSI frequencies →

Charts & procedures

Lowest minimums here: RNAV (GPS) with vertical guidance · VFR sectional →

Airport info

From the field

Do you run KFSI, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.

Airport information

ICAO / IATA: KFSI / FSI
Coordinates: 34.6498, -98.4022
Elevation: 1,188 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 · 122.3 · 1-800-WX-BRIEF
NOTAM facility: FSI
Beacon: S-white-green (SS-SR)
Segmented circle: No
Activated: 1943/12
Distance from city: 1 SE

Activity & hazards NASR

Parachute jumping — to 1,100 ft AGL · SUNRISE-SUNSET, WEEKENDS

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 under Sun & FAA night in the Weather section.

Ownership & management 2 contacts

Owner

US ARMY AERONAUTICAL SVCS AGENCY

FT BELVOIR, VA

Manager

580-442-4643

Remarks FAA · 18 notes

General

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.

Lighting

RDO REQ
UNSVCBL.

Contact

580-442-6014.

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<iframe src="https://skyready.app/embed/airport?icao=KFSI" title="KFSI live weather — SkyReady" width="100%" height="300" style="border:1px solid #dce5f2;border-radius:12px;max-width:420px" loading="lazy"></iframe>
<p style="font:14px system-ui;margin:6px 0 0"><a href="https://skyready.app/airport/kfsi">KFSI live weather &amp; runways by SkyReady</a></p>

More widgets — crosswind, E6B, density altitude — on the embed page.

Nearby airports

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Also nearby: 71OK Neuwirth Airstrip (private) (6 NM) · OK08 Hill Top Private Airport (private) (8 NM) · OK07 DJS Airport (private) (9 NM) · 7OK8 Jim Pettijohn Memorial Airport (private) (15 NM) · 84OK Pettijohn Acres Landing (private) (16 NM)

About KFSI

Henry Post Army Air Field (FSI · KFSI) is an airport in Fort Sill, OK, at 1,188 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. See the Comms & NavAids section 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 section for headings, surface, and lighting.

Where is KFSI?

Henry Post Army Air Field is in Fort Sill, OK, at an elevation of 1,188 ft MSL. Coordinates: 34.6498, -98.4022.

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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.