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 1 days · 0 total

NORMAL

Current weather

Latest METAR observation

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Temp

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Wind

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Visib

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Ceil

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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

72% of ops

572 land · 682 TO

28% of ops

217 land · 125 TO

Runway 32 carries 72% of operations (572 landings, 682 takeoffs) over the last 30 days. The next most-used is 14 at 28%.

Approach quality

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

32 572 landings

UA 19%

14 217 landings

UA 22%

Approaches to 32 show a 19% unstable-approach rate (106 UA events from 572 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

22.5

flights/day · 675 total

Busy hour (local)

6pm

also 7pm · 5pm

Day vs night

52%

06:00–20:00 local

Traffic concentrates around 5pm–6pm local, averaging 22.5 flights/day. Weekend volume runs 1.2× weekday (26.2 vs 22.1 daily).

Aircraft character

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

Activity is led by (19% of 575 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

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