Airports / K7S1 / Ruby Valley FieldGood ground coverage

📍 Twin Bridges⬆ 4,777 ft2 runways

K7S1 ·

Ruby Valley Field

45.53370°N

-112.30028°W

ARR / DAY

▼ 100.0%

DEP / DAY

▲ 0.0%

Ruby Valley Field (K7S1) is a small general aviation airport located in Twin Bridges, MT, 185 mi west of Billings. It features 2 runways with the longest being 6,000 feet.

Safety incidents

Last 7 days · 0 total

NORMAL

Current weather

From KBTM, 31 mi away (K7S1 does not publish METAR)

14m ago

Temp

59°F

Wind

3 kts

80°

Visib

10+ km

Ceil

—

KBTM 270853Z AUTO 08003KT 7SM CLR 15/07 A3017 RMK AO2 SLP148 T01500072 51012

Runways

2 installed

6,000 FT MAX

Runway intelligence

Which runway carries the operations, observed over the last 30 days

55% of ops

32 land · 0 TO

45% of ops

26 land · 0 TO

Runway 25 carries 55% of operations (32 landings, 0 takeoffs) over the last 30 days. The next most-used is 17 at 45%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

25 32 landings

UA 0%

17 26 landings

UA 0%

Approaches to 25 show a 0% unstable-approach rate (0 UA events from 32 landings).Phase B will add wind-correlation: which crosswind band produces most UA events.

Traffic behavior

When the field is busy: hourly + weekday vs weekend

Daily avg

0.5

flights/day · 15 total

Busy hour (local)

2pm

also 6pm · 8pm

Day vs night

80%

06:00–20:00 local

Traffic concentrates around 2pm–8pm local, averaging 0.5 flights/day. Weekend volume runs 1.3× weekday (0.6 vs 0.5 daily).

Aircraft character

What's actually flying here: top types over the last 30 days

Activity is led by (33% of 15 flights). Top three types: , , .

Communications Frequencies

2026-06-11

Type	Freq (MHz)	Hours
CTAF	122.900	—

Airport operations

ARTCC:: ZJX
Elevation:: 138 ft

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