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KNUC ·

San Clemente Island Naval Auxiliary Landing Field

33.02270°N
-118.58800°W
ARR / DAY
4
▼ 21.1%
DEP / DAY
4
▼ 23.1%

San Clemente Island Naval Auxiliary Landing Field (KNUC) is a small general aviation airport located in San Clemente Island, CA, 56 mi south west of Huntington Beach. It features 1 runway measuring 9,301 feet. SkyMeter has observed roughly 4 arrivals and 4 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 8 total

REVIEW →
↻
Go-arounds
0
✕
Rejected takeoffs
0
△
Unstable approaches
8
↺
Return to field
0

Current weather

Latest METAR observation

1d ago
Temp
86°F
Wind
6 kts
250°
Visib
10+ km
Ceil
—
METAR KNUC 282256Z 25006KT 10SM SCT250 30/24 A2987 RMK SLPNO LAST T03000244

Runways

1 installed

9,301 FT MAX
06/24
9,301 ft × 200
CON● LITHIGH

Runway intelligence

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

24
78% of ops
159 land · 51 TO
23
22% of ops
44 land · 18 TO
05
0% of ops
0 land · 16 TO
06
0% of ops
0 land · 82 TO
Runway 24 carries 78% of operations (159 landings, 51 takeoffs) over the last 30 days. The next most-used is 23 at 22%.

Approach quality

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

24 159 landings
UA 11%GA 0.6%
23 44 landings
UA 5%GA 2.3%
05 0 landings
UA 0%
06 0 landings
UA 0%
Approaches to 24 show a 11% unstable-approach rate (17 UA events from 159 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
10.7
flights/day · 320 total
Busy hour (local)
3pm
also 5pm · 9pm
Day vs night
67%
06:00–20:00 local
Traffic concentrates around 3pm–9pm local, averaging 10.7 flights/day. Weekend volume runs 0.0× weekday (0.2 vs 15.1 daily).

Aircraft character

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

105 · 33%
87 · 27%
39 · 12%
23 · 7%
17 · 5%
10 · 3%
Activity is led by (33% of 318 flights). Top three types: , , .

Communications Frequencies

2026-06-11
Type Freq (MHz) Hours
TWR 126.750 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
TWR 278.800 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
TWR 340.200 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
GND 119.550 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
GND 251.050 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
ATIS 268.600 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
APCH 127.050 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
APCH 292.150 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
EMERG 121.500 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
LCL/P 126.750 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
EMERG 243.000 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
LCL/P 278.800 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
LCL/S 340.200 0800-1800 MON-THU; 0800-1600 FRI; CLSD WKEND & HOL, OTHER TIMES BY NOTAM.
Airport operations
ARTCC:
ZLA
Mag var:
12° E

Hourly traffic

Avg movements per hour · local time · last 30 days

12a 1a 2a 3a 4a 5a 6a 7a 8a 9a 10a 11a 12p 1p 2p 3p 4p 5p 6p 7p 8p 9p 10p 11p
© SkyMeter · All flight data subject to ODbL attribution · Updated 20:55 UTC