📍 Portland-Mulino⬆ 260 ft1 runways
K4S9 ·
Portland Mulino Airport
45.21630°N
-122.59000°W
ARR / DAY
11
▲
40.4%
DEP / DAY
12
▲
49.1%
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 11 arrivals and 12 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
64% of ops
492 land · 594 TO
14
36% of ops
271 land · 158 TO
Runway 32 carries 64% of operations (492 landings, 594 takeoffs) over the last 30 days. The next most-used is 14 at 36%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
32
492 landings
UA 12%
14
271 landings
UA 17%
Approaches to 32 show a 12% unstable-approach rate (57 UA events from 492 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
18.7
flights/day · 560 total
Busy hour (local)
5pm
also 9pm · 7pm
Day vs night
50%
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 02:59 UTC