Cavanaugh Bay Airport
66S · Coolin, ID · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 08:57 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:49 AM | 11:49Z |
| Sunrise | 05:26 AM | 12:26Z |
| Sunset | 08:20 PM | 03:20Z |
| Evening civil twilight Loggable night begins | 08:57 PM | 03:57Z |
Plan a flight from 66S
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 15RIGHT trafficRP · charted
- Heading
- 150° mag · 170° true
- Dimensions
- 3,100 × 120 ft
- TPA
- 3,500 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
- CTAF
- 122.9
Enter the right downwind (heading 330°) on the 45° at 3,500 ft MSL (≈1,000 AGL).
More details — RWY 15
- Threshold elev
- 2,454 ft
- Approach obstacle
- Tree, 85 ft, 0 ft from threshold, 90 ft R of centerline
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 15/33 | 3,100 ft |
Prefer one flat page? Full runway details for 66S → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 66S kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Prefer one flat list? All 66S frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- 66S
- Coordinates
- 48.5182, -116.8221
- Elevation
- 2,484 ft MSL
- Magnetic variation
- 20E
- Sectional chart
- GREAT FALLS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SEATTLE (ZSE)
- Flight service (FSS)
- BOISE · 122.6 · 1-800-WX-BRIEF
- NOTAM facility
- BOI
- Attendance
- JUN-AUG THU-MON 0800-1700
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1949/09
- Distance from city
- 3 N
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Airframe service
- NONE
- Powerplant service
- NONE
- Parking
- tiedowns
Ownership & management 2 contacts
Remarks FAA · 10 notes
General
- NO WINTER MAINTENANCE.
- RWY 15/33 NO LINE OF SIGHT BTN RWY ENDS.
- WATCH FOR SPRINKLERS ON RY.
- ARPT ATTENDED BY CARETAKER DURG SUMMER MONTHS.
- SEAPLANE OPERATIONS CONDUCTED IN BAY NORTH & ADJACENT TO ARPT; MONITOR CTAF.
- HEAVY SNOWMOBILES ACTIVITY DURING WINTER MONTHS.
- FOR CD CTC SEATTLE ARTCC AT 253-351-3694.
Runways
- 15/33 EDGES & THRS MKD WITH WHITE ROCKS.
Obstructions
- BOTH RWY ENDS HAVE 50-70 FT TALL TREES. AFCTS EITHER APCH OR DEP.
- RY 15 +100 FT TREE 310 FT FM RY END 150 FT R; +12 FT ROAD 40 FT ON CNTRLN; +120 FT TREE 200 FT FM RY END 180 FT L; +30 FT TREE 125 FT FM RY END ON CNTRLN; +25 FT BLDG AT 90 FT; 60 FT L.
Nearby airports
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Also nearby: 67S Priest Lake Usfs Airport (7 NM) · 45ID Fox Creek Airport (private) (11 NM) · ID25 Olmstead Sky Ranch Airport (private) (15 NM) · ID61 Valenov Ranch Airport (private) (15 NM) · 55ID Spear Valley Airport (private) (16 NM)
About 66S
Cavanaugh Bay Airport (66S) is an airport in Coolin, ID, at 2,484 ft MSL. It has 1 runway, the longest 3,100 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 66S, refreshed from the Aviation Weather Center and FAA NASR.
Does 66S have a control tower?
No. Cavanaugh Bay Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 66S?
Cavanaugh Bay Airport has 1 runway; the longest is 3,100 ft. See the Runways section for headings, surface, and lighting.
Where is 66S?
Cavanaugh Bay Airport is in Coolin, ID, at an elevation of 2,484 ft MSL. Coordinates: 48.5182, -116.8221.
Fly out of 66S often?
Save 66S 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.
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 66S 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.