Airports / 21MU / The Peninsula AirportModerate ground coverage

📍 Shell Knob⬆ 1,015 ft1 runways

21MU ·

The Peninsula Airport

36.56490°N

-93.50960°W

ARR / DAY

▲ 87.5%

DEP / DAY

▲ 0.0%

The Peninsula Airport (21MU) is a small general aviation airport located in Shell Knob, MO, 46 mi south of Springfield. It features 1 runway measuring 2,800 feet. SkyMeter has observed roughly 4 arrivals and 1 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 0 total

NORMAL

Current weather

From KHRO, 29 mi away (21MU does not publish METAR)

25m ago

Temp

65°F

Wind

4 kts

120°

Visib

10+ km

Ceil

—

KHRO 290753Z AUTO 12004KT 10SM CLR 18/16 A3013 RMK AO2 SLP189 T01830156

Runways

1 installed

2,800 FT MAX

18/36

2,800 ft × 60

TURF-G○ unlit

Runway intelligence

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

71% of ops

72 land · 3 TO

29% of ops

29 land · 7 TO

Runway 18 carries 71% of operations (72 landings, 3 takeoffs) over the last 30 days. The next most-used is 36 at 29%.

Approach quality

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

18 72 landings

UA 0%

36 29 landings

UA 0%

Approaches to 18 show a 0% unstable-approach rate (0 UA events from 72 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

4.0

flights/day · 120 total

Busy hour (local)

2pm

also 8pm · 3pm

Day vs night

67%

06:00–20:00 local

Traffic concentrates around 2pm–3pm local, averaging 4.0 flights/day. Weekend volume runs 0.7× weekday (3.1 vs 4.5 daily).

Aircraft character

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

Activity is led by (19% of 89 flights). Top three types: , , .

Communications Frequencies

2026-06-11

Type	Freq (MHz)	Hours
CTAF	122.900	—

Airport operations

ARTCC:: ZKC
Elevation:: 1,015 ft

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