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KMER

MER

Castle Airport · Merced

Key Facts

Technical summary and operational standards.

ILS Approach StatusILS FREQUENCIES VERIFIED ✅

Field Elevation

191 ft / 58 m

Transition Altitude

18,000 ft

Primary Channel

A/D 120.95 MHz (NORCAL APP/DEP)

Runway Summary

13/3111,802 ftPEMLIGHTED

Details Runways Frequencies Navaids Nearby

Mission Briefing & Tools

Direct calculators and pre-filled resources for this airport.

SkyVector FlightAware Live METAR Satellite

Less math, more flying. Did this save your approach? 🛬

Briefing for Castle Airport (KMER), United States. This facility features 1 active runways with an elevation of 191 ft. Verified ILS frequencies are available for precision approaches.Maintain a Transition Altitude of 18,000 ft for altimeter reset.

Airport Details

Full geographical and organizational metadata.

Full Name

Castle Airport

ICAO / IATA

KMER / MER

Municipality

Merced

Country

Region

US-CA

GPS Coordinates

37.380501, -120.568001

Transition Altitude

18,000 ft

Official Website

—

Wikipedia

Runways & ILS Approach Data

Detailed dimensions and verified landing frequencies.

Runway 13 / 31

ILSLIGHTED

Crosswind 13 Crosswind 31 TOD VDP

Length: 11,802 ft / 3,597 m
Surface: PEM
Heading: 141° / 321°

RWY 13

No ILS

RWY 31

109.50 MHz

ID: MER | CRS: 306°

Nearby Navaids

VOR, NDB, DME stations in the vicinity.

HYP · VOR-DME (El Nido)114,200 kHz

182 ft · Associated: None
37.219398, -120.400002

MO · NDB (Wowar)367 kHz

115 ft · Associated: KMOD
37.573101, -120.855003

Communication Frequencies

ATC and advisory channels.

A/D NORCAL APP/DEP

120.95 MHz

AWOS AWO 3

124.47 MHz

UNIC CTAF/UNICOM

123.08 MHz

Nearby Airports

Alternatives in the vicinity.

Merced Regional Macready Field

Modesto City Co-Harry Sham Field

Stockton Metropolitan Airport

Fresno Yosemite International Airport

Norman Y. Mineta San Jose International Airport

Data Source: OurAirports · Technical Briefing Jan 2026
ILS Data Source: AIP / FAA NASR Cycle Verified