What are the operating hours of KMER?

Castle Airport operates from 15:00 to 00:00.

What is the tower frequency at KMER?

The tower frequency at Castle Airport is 118.175, 235.775 MHz.

What fuel is available at KMER?

Castle Airport offers 100LL, Jet A, Jet A-1.

Does KMER require landing permits?

Yes, landing permits are required for Castle Airport (United States).

Where is KMER located?

Castle Airport (KMER) is located in Merced, United States.

What is the IATA code for KMER?

The IATA code for Castle Airport is MER.

How long is the runway at KMER?

The main runway at Castle Airport (13/31) measures 3597x46m.

Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer

Castle Airport (KMER/MER) — Merced, United States

Castle Airport (KMER/MER) serves Merced, United States. This is a mid-sized airport with 1 runway (13/31). Field elevation is 191 ft AMSL. Data on this page is maintained by the aviation community — contribute to keep it accurate.

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83% Data Complete 43 of 52 points

Missing: Contacts

Section Breakdown

Basic Info 7/7

Runways 4/4

Frequencies 4/4

Operations 2/2

Fuel 1/1

Contacts 0/2

Additional Info 3/10

Data last updated: 2026-03-27

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Basic Airport Information

ICAO: KMER
Name: Castle Airport
Type: medium_airport
Category: Domestic
Latitude: 37.380501
Longitude: -120.568001
Elevation: 191 ft
Country: United States
Municipality: Merced
IATA Code: MER
FAA Code: N/A
FIR: N/A
Timezone: America/Los_Angeles
Distance from City: N/A km
VFR: Yes
IFR: No

Runways

Runway 13/31

Designation: 13/31
Dimensions: 3597x46m
Surface: PEM
PCN: N/A
Lighting: Lighted
NAVAIDs: N/A
Approach Types: N/A
Remarks: N/A

Frequencies

Tower: 118.175, 235.775 MHz
Ground: 133.575 MHz
Operations: 118.175, 122.950 MHz
Traffic/Approach: N/A
ATIS: 124.475 MHz

Operation Hours

Monday 15:00 – 00:00

Tuesday 15:00 – 00:00

Wednesday 15:00 – 00:00

Thursday 15:00 – 00:00

Friday 15:00 – 00:00

Saturday 15:00 – 00:00

Sunday 15:00 – 00:00

Extra Hours On Request: No
Remarks: N/A

Contacts

AIS Tel: N/A
ARO Tel: N/A
MET Tel: N/A
Admin Tel: +1 209-617-5399
Health Tel: N/A
Police Tel: N/A
Authorities Tel: N/A
Website: N/A
Remarks: N/A

Slots / PPR

Slot Required: No
PPR Required: No
PPR Contact: N/A
Remarks: N/A

Fuel Information

Fuel Type: 100LL
Price/L: N/A
Last Updated: N/A
Remarks: N/A

Fuel Type: Jet A
Price/L: N/A
Last Updated: N/A
Remarks: N/A

Fuel Type: Jet A-1
Price/L: N/A
Last Updated: N/A
Remarks: N/A

Immigration

Port of Entry: No
GENDEC Required: No
GAR Required: No
Remarks: N/A

Airport Services

No services listed for this airport yet.

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United States Permit Requirements

Fast Landing: 1d

Overflight Permit: No
Landing Permit: Conditional
Overflight Lead Time: N/A
Landing Lead Time: 60 minutes minimum (eAPIS manifest before departure); recommend 24-48 hours for CBP port notification

Private / GA Operations:

No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures.

View Full United States Permit Details

Active NOTAMs

07/003 info

!MER 07/003 MER SVC TWR CLSD MNT CTAF 118.175 DLY 1400-0400 2607111400-2607130400

2026-07-11 14:00:00 2026-07-13 04:00:00

07/004 info

AUTOMATED WX BCST SYSTEM U/S

2026-07-09 23:31:00 2027-04-14 23:59:00

03/009 info

RWY 31 SEQUENCED FLG LGT U/S

2026-03-25 15:15:00 2026-09-28 21:11:00

View all NOTAMs on Map

Nearby Airports

0CN1 Fiorini Ranch Airport 10 NM 34CN Bonanza Hills Airport 12 NM 28CA Dos Palos Airport 25 NM 08CL Kistler Ranch Airport 29 NM 49CL El Peco Ranch Airport 34 NM 0CL0 Yosemite Hidden Lake Ranch Airport 35 NM 45CN Hermitage Airport 35 NM 1C9 Frazier Lake Airpark 50 NM

Compare KMER with 0CN1 side by side →

Airport History

Discover the key milestones and historical events that shaped Castle Airport. Our community-powered timeline traces this airport's journey from its origins to the present day.

Explore History

Frequently Asked Questions

What are the operating hours of KMER?: Castle Airport operates from 15:00 to 00:00.
What is the tower frequency at KMER?: The tower frequency at Castle Airport is 118.175, 235.775 MHz.
What fuel is available at KMER?: Castle Airport offers 100LL, Jet A, Jet A-1.
Does KMER require landing permits?: Yes, landing permits are required for Castle Airport (United States).
Where is KMER located?: Castle Airport (KMER) is located in Merced, United States.
What is the IATA code for KMER?: The IATA code for Castle Airport is MER.
How long is the runway at KMER?: The main runway at Castle Airport (13/31) measures 3597x46m.

View on Map