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CASTLE - Airport Diagram
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KMER
ICAO KMERIATA MERLocal MER
CASTLE
PublicPUB

3 miles NE of ATWATER, CA, US
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LiveATC.net: Live Air Traffic - From Their Headsets to You
Status
Operational
Coordinates
37° 22' 50"N 120° 34' 05"W
Elevation
190' MSL
Pattern Alt
1190' MSL
Mag Variation
13°E
Declination
15°E
Fuel
JET A, JET A-1, 100LL
FSS
RANCHO MURIETA (RIU)
Sectional
SAN FRANCISCO
ARTCC
OAKLAND (ZOA)
Data Effective
2/19/26-3/19/26
KMER VFR
10:55 AM PST  
Clear
10sm
32°F
32°F
N/A
120° 8kts
METAR KMER 221855Z 12008KT 10SM CLR
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Weather and Advisory

ATIS 124.475
AWOS-3 (209) 725-0104

Common

CTAF 118.175
WHEN ATCT CLSD ACTVT ALSF1 RWYS 13 & 31; HIRL RWY 13/31 - CTAF; 3 CLICKS ON, 5 CLICKS INCR INTST, 7 CLICKS OFF. PAPI RWYS 13 & 31 OPR CONSLY.
UNICOM 122.95

Ground

CASTLE GROUND 133.575
0700-2100

Tower

CASTLE TOWER 118.175
0700-2100

Approach

NORCAL APPROACH 120.95

Departure

NORCAL DEPARTURE 120.95

FAA A/FD Pages

Airport Diagrams

Airport Minimums

Instrument Approach

Hotspot

Terminal Area Forecast

KMER
Sun, 2/22 9:20 AM PST
Sun, 2/22 10:00 AM PST - Mon, 2/23 10:00 AM PST
VFR
10:00 AM PST - 10:00 AM PST
Sky Clear
6sm
VRB° 5kts
TAF KMER 221720Z 2218/2318 VRB05KT P6SM SKC AMD NOT SKED
KMER
EffectiveExpiresCategoryNOTAM
Domestic
2/9/26
1553Z
3/9/26
2359Z
!MER 02/002 MER SVC ATIS 124.475 U/S 2602091553-2603092359
12/31/25
0532Z
3/31/26
0500Z
!MER 12/005 MER OBST TOWER LGT (ASR 1239176) 372535.00N1202628.90W (6.6NM ENE MER) 794.0FT (350.1FT AGL) U/S 2512310532-2603310500
12/17/25
1949Z
4/18/26
2359Z
!MER 12/003 MER SVC AUTOMATED WX BCST SYSTEM U/S 2512171949-2604182359
9/26/25
1443Z
Runway!MER 09/013 MER RWY 31 SEQUENCED FLG LGT U/S 2509261443-2603262111EST
Yes
MON-FRI 0800-1700
MERCED COUNTY
2222 M STREET
MERCED, CA 95340
Phone: 209-385-7686
GEORGE CLOVER
2222 M STREET
MERCED, CA 95340
Phone: 209-617-5399
RANCHO MURIETA FSS (RIU)
Toll Free: 1-800-WX-BRIEF
MER
--
WHEN ATCT CLSD ACTVT ALSF1 RWYS 13 & 31; HIRL RWY 13/31 - CTAF; 3 CLICKS ON, 5 CLICKS INCR INTST, 7 CLICKS OFF. PAPI RWYS 13 & 31 OPR CONSLY.
N/A
Yes - Lighted
Yes
No
Hanger, Tie-Down
NOT a Landing Rights Airport
NOT an Airport of Entry
Minor
Minor
None
None
None

Runway 13/31

11802 ft. x 150 ft.
ASPH CONC  
Good 
NONE 
HIGH 
 
155,000lbs 
200,000lbs 
415,000lbs 
720,000lbs 
  Runway 13 Runway 31
True Heading 141°321°
Traffic Pattern Right
Markings NPI PIR
Markings Condition GOOD GOOD
Latitude 37° 23' 35"N 37° 22' 04"N
Longitude 120° 34' 51"W 120° 33' 20"W
Elevation 190' 178'
Threshold Crossing Height 75 ft. AGL 71 ft. AGL
Visual Glide Path Angle 3° 3°
Visual Slope Indicator P4L P4L
Approach Lights ALSF1 ALSF1
Centerline Lights
Runway End Identifier Lights No
A11COMMUNITY & ECONOMIC DEVELOPMENT
A110-10WHEN ATCT CLSD MAX OF 5 ACFT PMTD IN VFR TFC PAT AT ANY ONE TIME AND 2000 FT CIG AND 3 MIS VIS RCMDD.
A110-11FOR CD WHEN ATCT IS CLSD CTC NORCAL APCH AT 916-361-0516.
A110-12TWY B CLSD TO ACFT GTR THAN 30000 LBS.
A110-2RY 13/31 180 DEGREE TURNS PROHIBITIED.
A110-3FOR ARPT INFO 209-385-7686, EXTN 4180.
A110-4RY 31 WILL BE THE DESIGNATED CALM WIND RY (WIND 5 KNOTS OR LESS).
A110-7OPPOSITE END OF RY NOT VISIBLE ON TKOF. WHEN ATCT CLSD OPPOSITE DIRECTION TAKEOFFS AND LANDINGS ARE NOT AUTHORIZED.
A110-9CIVILIAN AND MILITARY TRAINING MAY OCCASIONALLY CAUSE PATTERN CONGESTION.
A15MAILING ADDRESS
A16DESK PHONE 209-385-7686, EXTN 4180.
A30-13/311,000 FT PAVED BLAST PAD BOTH ENDS OF RY.
A49-31ALSF1 RY 13/31 SEQUENCED FLASHING LGTS OTS INDEFLY.
A70-100LLFOR FUEL FM 1800-0900 CALL (209) 725-1455.
A81-APTWHEN ATCT CLSD ACTVT ALSF1 RWYS 13 & 31; HIRL RWY 13/31 - CTAF; 3 CLICKS ON, 5 CLICKS INCR INTST, 7 CLICKS OFF. PAPI RWYS 13 & 31 OPR CONSLY.
E111NO OBJECTIONS
CASTLE (ICAO: KMER, IATA: MER) is a public airport located in ATWATER, CA, US.