📍 Portland-Mulino⬆ 260 ft1 runways
K4S9 ·
Portland Mulino Airport
45.21630°N
-122.59000°W
ARR / DAY
9
▲
14.3%
DEP / DAY
10
▲
37.7%
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 3,600 feet. SkyMeter has observed roughly 9 arrivals and 10 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 0 total
Current weather
From KUAO, 9 mi away (K4S9 does not publish METAR)
Temp
57°F
Wind
0 kts
0°
Visib
10+ km
Ceil
—
Runways
1 installed
14/32
3,600 ft × 100
ASP● LITMED
Runway intelligence
Which runway carries the operations, observed over the last 30 days
32
72% of ops
318 land · 461 TO
14
28% of ops
125 land · 16 TO
Runway 32 carries 72% of operations (318 landings, 461 takeoffs) over the last 30 days. The next most-used is 14 at 28%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
32
318 landings
UA 8%
14
125 landings
UA 14%
Approaches to 32 show a 8% unstable-approach rate (25 UA events from 318 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
18.3
flights/day · 550 total
Busy hour (local)
9pm
also 8pm · 6pm
Day vs night
42%
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 19:14 UTC