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

From KSPB, 41 mi away (K4S9 does not publish METAR)

just now

Temp

88°F

Wind

4 kts

100°

Visib

10+ km

Ceil

—

METAR KSPB 312353Z AUTO 10004KT 10SM CLR 31/06 A2971 RMK AO2 SLP061 T03060061 10306 20217 56017 $

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

67% of ops

529 land · 633 TO

33% of ops

257 land · 151 TO

Runway 32 carries 67% of operations (529 landings, 633 takeoffs) over the last 30 days. The next most-used is 14 at 33%.

Approach quality

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

32 529 landings

UA 11%

14 257 landings

UA 20%

Approaches to 32 show a 11% unstable-approach rate (58 UA events from 529 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

16.7

flights/day · 502 total

Busy hour (local)

5pm

also 9pm · 8pm

Day vs night

46%

06:00–20:00 local

Traffic concentrates around 5pm–8pm local, averaging 16.7 flights/day. Weekend volume runs 1.8× weekday (25.1 vs 14.3 daily).

Aircraft character

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

Activity is led by (20% of 451 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