📍 Portland-Mulino⬆ 260 ft1 runways
K4S9 ·
Portland Mulino Airport
45.21630°N
-122.59000°W
ARR / DAY
13
▲
83.7%
DEP / DAY
14
▲
93.9%
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 3,600 feet. SkyMeter has observed roughly 13 arrivals and 14 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
74°F
Wind
11 kts
50°
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
65% of ops
514 land · 614 TO
14
35% of ops
273 land · 160 TO
Runway 32 carries 65% of operations (514 landings, 614 takeoffs) over the last 30 days. The next most-used is 14 at 35%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
32
514 landings
UA 12%
14
273 landings
UA 17%
Approaches to 32 show a 12% unstable-approach rate (61 UA events from 514 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
19.0
flights/day · 571 total
Busy hour (local)
5pm
also 9pm · 7pm
Day vs night
49%
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 20:45 UTC