Airports / K4S9 / Portland Mulino AirportGood ground coverage

📍 Portland-Mulino⬆ 260 ft1 runways

K4S9 ·

Portland Mulino Airport

45.21630°N

-122.59000°W

ARR / DAY

▼ 100.0%

DEP / DAY

▼ 100.0%

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 3,425 feet.

Safety incidents

Last 7 days · 0 total

NORMAL

Current weather

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

30m ago

Temp

62°F

Wind

3 kts

0°

Visib

10+ km

Ceil

—

KUAO 271553Z VRB03KT 10SM CLR 17/12 A3011 RMK AO2 SLP196 T01670117

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

75% of ops

984 land · 1,200 TO

25% of ops

327 land · 122 TO

Runway 32 carries 75% of operations (984 landings, 1,200 takeoffs) over the last 30 days. The next most-used is 14 at 25%.

Approach quality

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

32 984 landings

UA 21%

14 327 landings

UA 19%

Approaches to 32 show a 21% unstable-approach rate (202 UA events from 984 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 · 561 total

Busy hour (local)

6pm

also 5pm · 7pm

Day vs night

52%

06:00–20:00 local

Traffic concentrates around 6pm–7pm local, averaging 18.7 flights/day. Weekend volume runs 1.2× weekday (22.5 vs 18.1 daily).

Aircraft character

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

Activity is led by (20% of 483 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