KMER · MER
Castle Airport
Merced, CaliforniaElevation 191 ftMedium airport
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Runway detail & declared distances
13/31
RWY 13141°T
Approach lightsALSF1
VGSIPAPI (P4L)
RWY 31321°T
ILSLOC/GS
Approach lightsALSF1
VGSIPAPI (P4L)
Traffic patternRight
Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.
AIRPORT INFORMATION
Facility & services
Castle Airport is in Merced, California. Field elevation 191 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.
OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeMedium airport
ManagerGEORGE CLOVER
Manager phone209-617-5399
AttendedALL MON-FRI, 0800–1700
CHARTS & AIRSPACE
ICAO / IATAKMER / MER
SectionalSAN FRANCISCO
Center (ARTCC)OAKLAND
Flight service (AFSS)RANCHO MURIETA
RegionCalifornia
CountryUnited States
Coordinates37.3805, -120.5680
Distance from city3 NM NE
SERVICES & LIGHTING
Fuel100LL · Jet A · Jet A-1
Control towerTowered
Field lightingSee remarks
BeaconSunset to sunrise · White-green (lighted land airport)
CTAF118.175
UNICOM122.950
FREQUENCIES
Communications
120.95
NORCAL APP/DEP
A/D
124.475
AWO 3
AWOS
123.075
CTAF/UNICOM
UNIC
118.175
CTAF
CTAF
122.950
UNICOM
UNICOM
Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.
AIRPORT REMARKS
Operational remarks
›RY 13/31 180 DEGREE TURNS PROHIBITIED.
›TWY B CLSD TO ACFT GTR THAN 30000 LBS.
›FOR CD WHEN ATCT IS CLSD CTC NORCAL APCH AT 916-361-0516.
›RY 31 WILL BE THE DESIGNATED CALM WIND RY (WIND 5 KNOTS OR LESS).
›MAILING ADDRESS
›ALSF1 RY 13/31 SEQUENCED FLASHING LGTS OTS INDEFLY.
›FOR FUEL FM 1800-0900 CALL (209) 725-1455.
›FOR ARPT INFO 209-385-7686, EXTN 4180.
›NO OBJECTIONS
›OPPOSITE END OF RY NOT VISIBLE ON TKOF. WHEN ATCT CLSD OPPOSITE DIRECTION TAKEOFFS AND LANDINGS ARE NOT AUTHORIZED.
›CIVILIAN AND MILITARY TRAINING MAY OCCASIONALLY CAUSE PATTERN CONGESTION.
›DESK PHONE 209-385-7686, EXTN 4180.
›1,000 FT PAVED BLAST PAD BOTH ENDS OF RY.
›WHEN ATCT CLSD MAX OF 5 ACFT PMTD IN VFR TFC PAT AT ANY ONE TIME AND 2000 FT CIG AND 3 MIS VIS RCMDD.
›COMMUNITY & ECONOMIC DEVELOPMENT
›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.
OFFICIAL LINKS & SOURCES
FREQUENTLY ASKED
Does KMER have a METAR?
Yes. KMER is a METAR-reporting station; the current observation loads live on this page.
Does KMER have a TAF?
When KMER issues a TAF, its decoded forecast timeline loads live on this page; otherwise use the nearest TAF-issuing field as a planning reference.
What is the field elevation at KMER?
KMER sits at 191 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for KMER?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.