📍 Shell Knob⬆ 1,015 ft1 runways

21MU ·

The Peninsula Airport

36.56490°N

-93.50960°W

ARR / DAY

▲ 63.6%

DEP / DAY

▲ 100.0%

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 5 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)

56m ago

Temp

98°F

Wind

7 kts

130°

Visib

10+ km

Ceil

—

KHRO 012053Z AUTO 13007KT 10SM CLR 37/18 A3004 RMK AO2 SLP152 T03670178 56020

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

76% of ops

80 land · 3 TO

24% of ops

25 land · 7 TO

Runway 18 carries 76% of operations (80 landings, 3 takeoffs) over the last 30 days. The next most-used is 36 at 24%.

Approach quality

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

18 80 landings

UA 0%

36 25 landings

UA 0%

Approaches to 18 show a 0% unstable-approach rate (0 UA events from 80 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

4.2

flights/day · 125 total

Busy hour (local)

2pm

also 8pm · 3pm

Day vs night

64%

06:00–20:00 local

Traffic concentrates around 2pm–3pm local, averaging 4.2 flights/day. Weekend volume runs 1.0× weekday (4.4 vs 4.3 daily).

Aircraft character

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

Activity is led by (19% of 91 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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