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KNUC ·

San Clemente Island Naval Auxiliary Landing Field

33.02270°N
-118.58800°W
ARR / DAY
3
▼ 14.3%
DEP / DAY
3
▼ 17.2%

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 3 arrivals and 3 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 4 total

REVIEW →
↻
Go-arounds
0
✕
Rejected takeoffs
0
△
Unstable approaches
4
↺
Return to field
0

Current weather

Latest METAR observation

6h ago
Temp
73°F
Wind
13 kts
290°
Visib
10+ km
Ceil
—
METAR KNUC 012156Z 29013KT 10SM CLR 23/17 A3001 RMK SLPNO T02280167

Runways

1 installed

9,301 FT MAX
05/23
9,301 ft × 200
CON● LIT

Runway intelligence

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

24
80% of ops
165 land · 58 TO
23
20% of ops
40 land · 16 TO
05
0% of ops
0 land · 16 TO
06
0% of ops
0 land · 82 TO
Runway 24 carries 80% of operations (165 landings, 58 takeoffs) over the last 30 days. The next most-used is 23 at 20%.

Approach quality

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

24 165 landings
UA 11%GA 0.6%
23 40 landings
UA 5%GA 2.5%
05 0 landings
UA 0%
06 0 landings
UA 0%
Approaches to 24 show a 11% unstable-approach rate (18 UA events from 165 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
11.1
flights/day · 333 total
Busy hour (local)
3pm
also 5pm · 9pm
Day vs night
69%
06:00–20:00 local
Traffic concentrates around 3pm–9pm local, averaging 11.1 flights/day. Weekend volume runs 0.0× weekday (0.1 vs 15.8 daily).

Aircraft character

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

109 · 33%
99 · 30%
37 · 11%
23 · 7%
17 · 5%
10 · 3%
Activity is led by (33% of 332 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 04:33 UTC