St Marys Municipal Airport
OYM · KOYM · STQ · St Marys, PA · 1,934 ft elevation · var 11W · Non-towered
Airport information
- ICAO / IATA
- KOYM / STQ
- Coordinates
- 41.4125, -78.5026
- Elevation
- 1,934 ft MSL
- Magnetic variation
- 11W
- Sectional chart
- DETROIT
- Airport use
- Public
- Control tower
- No
- Weather station
- AWOS-3P · 118.05 · ☎ 814-834-9416
- ARTCC
- CLEVELAND (ZOB)
- Flight service (FSS)
- ALTOONA · 1-800-WX-BRIEF
- NOTAM facility
- AOO
- Attendance
- MON-FRI 0800-1600
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1946/10
- Distance from city
- 3 SE
Weather
METAR observed
Loading current weather…
TAF forecast
Loading forecast…
Sun & FAA night 2026-06-22
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:07 AM | 09:07Z |
| Sunrise | 05:41 AM | 09:41Z |
| Sunset | 08:51 PM | 00:51Z |
| Evening civil twilight Loggable night begins | 09:25 PM | 01:25Z |
Plan a flight from KOYM
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT MALS RWY 28; PAPI RWYS 10 & 28; MIRL RWY 10/28 - CTAF. on 122.7 — Chart Supplement ↗
Runway lighting aids — 10: 4-light PAPI (left) · 28: 4-light PAPI (left) + MALS.
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 10 · 101°
- Pattern
- left (turns left)
- TPA
- 2,900 ft MSL (≈1,000 AGL)
- CTAF
- 122.7
Enter the left downwind for Rwy 10 at 2,900 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 10/28
4,300 ft × 75 ft · Asphalt (Good)- Heading
- 101° mag · 90° true
- Threshold elev
- 1,902 ft
- Markings
- nonprecision
- VGSI
- 4-light PAPI (left) (3°)
- Traffic pattern
- Left
- Approach obstacle
- Trees, 142 ft, 3,684 ft from threshold, 340 ft L of centerline — 24:1 slope to clear
- Threshold crossing height
- 41 ft
- TDZ elevation
- 1,909 ft
- Heading
- 281° mag · 270° true
- Threshold elev
- 1,934 ft
- Markings
- nonprecision
- VGSI
- 4-light PAPI (left) (3°)
- Approach lights
- MALS
- Instrument landing
- LOC/DME · LOC 108.9 (OYM)
- Traffic pattern
- Left
- Approach obstacle
- Trees, 72 ft, 2,372 ft from threshold, 523 ft L of centerline — 30:1 slope to clear
- Threshold crossing height
- 39 ft
- TDZ elevation
- 1,934 ft
| Runway | Length | Your margin |
|---|---|---|
| 10/28 | 4,300 ft |
Communication frequencies
Tower & ground · “St Marys”
| ASOS/AWOS | 118.05 |
| CTAF | 122.7 |
| UNICOM | 122.7 |
| Flight service | 122.4 · 126.725 (LOW) |
By procedure & sector (1 frequencies)
| Frequency | Used by |
|---|---|
| 291.65 | DUBOIS RCAG (LOW) |
Source: FAA NASR (current 28-day cycle).
Instrument landing systems
| Runway | ILS |
|---|---|
| RWY 28 | LOC/DME · LOC 108.9 (OYM) |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| ETG · Keating | VORTAC | 116.00 | r316° / 20.1 NM |
| BFD · Bradford | VOR-DME | 116.60 | r174° / 23.1 NM |
| SLT · Slate Run | VORTAC | 113.90 | r264° / 24.7 NM |
| PSB · Philipsburg | VORTAC | 115.50 | r332° / 37.7 NM |
Procedures at a glance
Approaches3
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns
- Other services
- Instruction
Ownership & management
Remarks FAA
- FOR CD CTC CLEVELAND ARTCC AT 440-774-0234.
- COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -36C.
- ACTVT MALS RWY 28; PAPI RWYS 10 & 28; MIRL RWY 10/28 - CTAF.
- +7 FT FENCE 200 FT N OF RY 0-200 FT. +15 FT PUBLIC ROAD 0-200 FT & 225 FT L. PUBLIC ROAD OBSTN MKD BY LIGHTED POLES.
- +13 FT FENCE N OF RY FM 0-176 FT, 219 FT LEFT. +23 FT PUBLIC ROAD, 222 FT RIGHT. PUBLIC ROAD OBSTN MKD BY LIGHTED POLES.
- PAPI UNUSBL BYD 5 DEGS RIGHT OF CNTRLN.
- PAPI UNUSBL BYD 8 DEGS RIGHT OF CNTRLN.
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 KOYM 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 KOYM
St Marys Municipal Airport (OYM · KOYM · STQ) is an airport in St Marys, PA, at 1,934 ft MSL. It has 1 runway, the longest 4,300 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KOYM, refreshed from the Aviation Weather Center and FAA NASR.
Does KOYM have a control tower?
No. St Marys Municipal Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at KOYM?
St Marys Municipal Airport has 1 runway; the longest is 4,300 ft. See the Runways tab for headings, surface, and lighting.
Where is KOYM?
St Marys Municipal Airport is in St Marys, PA, at an elevation of 1,934 ft MSL. Coordinates: 41.4125, -78.5026.
Fly out of KOYM often?
Save KOYM as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.