📍 Portland-Mulino⬆ 260 ft1 runways

K4S9 ·

Portland Mulino Airport

45.21630°N

-122.59000°W

ARR / DAY

▼ 8.5%

DEP / DAY

▼ 10.6%

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 11 arrivals and 11 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 0 total

NORMAL

Current weather

From KUAO, 9 mi away (K4S9 does not publish METAR)

20m ago

Temp

66°F

Wind

7 kts

210°

Visib

10+ km

Ceil

—

KUAO 270653Z AUTO 21007KT 10SM OVC070 19/12 A3003 RMK AO2 SLP168 T01890122

Runways

1 installed

3,425 FT MAX

14/32

3,425 ft × 100

ASP● LITMED

Runway intelligence

Which runway carries the operations, observed over the last 30 days

71% of ops

332 land · 406 TO

29% of ops

137 land · 81 TO

Runway 32 carries 71% of operations (332 landings, 406 takeoffs) over the last 30 days. The next most-used is 14 at 29%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

32 332 landings

UA 11%

14 137 landings

UA 22%

Approaches to 32 show a 11% unstable-approach rate (35 UA events from 332 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

16.1

flights/day · 483 total

Busy hour (local)

5pm

also 8pm · 6pm

Day vs night

49%

06:00–20:00 local

Traffic concentrates around 5pm–6pm local, averaging 16.1 flights/day. Weekend volume runs 1.7× weekday (23.9 vs 13.9 daily).

Aircraft character

What's actually flying here: top types over the last 30 days

Activity is led by (19% of 439 flights). Top three types: , , .

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

Custom date range