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KNUC ·

San Clemente Island Naval Auxiliary Landing Field

33.02270°N
-118.58800°W
ARR / DAY
4
▼ 42.9%
DEP / DAY
4
▼ 40.8%

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 · 6 total

REVIEW →
↻
Go-arounds
0
✕
Rejected takeoffs
0
△
Unstable approaches
6
↺
Return to field
0

Current weather

Latest METAR observation

18h ago
Temp
81°F
Wind
10 kts
260°
Visib
10+ km
Ceil
—
METAR KNUC 252356Z 26010KT 10SM FEW025 FEW250 27/22 A2990 RMK SLPNO T02670222 10272 20250 56015

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
69% of ops
175 land · 59 TO
23
31% of ops
77 land · 31 TO
05
0% of ops
0 land · 34 TO
06
0% of ops
0 land · 90 TO
Runway 24 carries 69% of operations (175 landings, 59 takeoffs) over the last 30 days. The next most-used is 23 at 31%.

Approach quality

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

24 175 landings
UA 9%GA 0.6%
23 77 landings
UA 5%GA 1.3%
05 0 landings
UA 0%
06 0 landings
UA 0%
Approaches to 24 show a 9% unstable-approach rate (16 UA events from 175 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
12.0
flights/day · 361 total
Busy hour (local)
3pm
also 9pm · 5pm
Day vs night
66%
06:00–20:00 local
Traffic concentrates around 3pm–5pm local, averaging 12.0 flights/day. Weekend volume runs 0.0× weekday (0.2 vs 17.1 daily).

Aircraft character

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

120 · 34%
98 · 27%
41 · 11%
26 · 7%
19 · 5%
12 · 3%
Activity is led by (34% of 358 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 18:41 UTC