📍 Portland-Mulino⬆ 260 ft1 runways
K4S9 ·
Portland Mulino Airport
45.21630°N
-122.59000°W
ARR / DAY
13
▲
60.0%
DEP / DAY
13
▲
57.9%
Portland Mulino Airport (K4S9) is a small general aviation airport located in Portland-Mulino, OR, 21 mi south of Gresham. It features 1 runway measuring 3,425 feet. SkyMeter has observed roughly 13 arrivals and 13 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 1 total
Current weather
From KUAO, 9 mi away (K4S9 does not publish METAR)
Temp
72°F
Wind
4 kts
180°
Visib
10+ km
Ceil
—
Runways
1 installed
14/32
3,425 ft × 100
ASP● LITMED
Runway intelligence
Which runway carries the operations, observed over the last 30 days
32
76% of ops
356 land · 440 TO
14
24% of ops
115 land · 57 TO
Runway 32 carries 76% of operations (356 landings, 440 takeoffs) over the last 30 days. The next most-used is 14 at 24%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
32
356 landings
UA 10%
14
115 landings
UA 25%
Approaches to 32 show a 10% unstable-approach rate (35 UA events from 356 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
16.7
flights/day · 500 total
Busy hour (local)
5pm
also 8pm · 6pm
Day vs night
48%
06:00–20:00 local
Communications Frequencies
2026-06-11| Type | Freq (MHz) | Hours |
|---|---|---|
| CTAF | 123.050 | — |
| UNICOM | 123.050 | — |
| CD/P | 119.950 | — |
| OTHER | 119.950 | — |
Airport operations
- ARTCC:
- ZSE
- Mag var:
- 19° E
- Fuel:
- 100LL
Hourly traffic
Avg movements per hour · local time · last 30 days
© SkyMeter ·
All flight data subject to ODbL attribution
·
Updated 06:25 UTC