📍 Portland-Mulino⬆ 260 ft1 runways
K4S9 ·
Portland Mulino Airport
45.21630°N
-122.59000°W
ARR / DAY
7
▼
50.5%
DEP / DAY
8
▼
50.0%
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 7 arrivals and 8 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 0 total
Current weather
From KSPB, 41 mi away (K4S9 does not publish METAR)
Temp
88°F
Wind
4 kts
100°
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
68% of ops
567 land · 679 TO
14
32% of ops
263 land · 152 TO
Runway 32 carries 68% of operations (567 landings, 679 takeoffs) over the last 30 days. The next most-used is 14 at 32%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
32
567 landings
UA 11%
14
263 landings
UA 19%
Approaches to 32 show a 11% unstable-approach rate (65 UA events from 567 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
17.7
flights/day · 532 total
Busy hour (local)
5pm
also 6pm · 9pm
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 07:02 UTC