Castle charts & airport diagram

Castle (MER · KMER) in Atwater, CA publishes 8 FAA charts, including 3 instrument approaches (ILS, RNAV (GPS)). Every one links straight to the current FAA PDF. · Open on the map

All of Castle — runways, frequencies, charts and live weather

PDF ↗

Lowest minimums here: ILS with vertical guidance · Every chart below links straight to the current FAA PDF.

What KMER publishes

Airport diagram

The FAA airport diagram for Castle — runways, taxiways, ramps and hold short lines. Shown in the browser above; the FAA PDF ↗ is the authoritative copy.

Instrument approaches at KMER

Castle has 3 published instrument approaches of 2 types (ILS and RNAV (GPS)). 3 of them offer vertical guidance; ILS gives the lowest minimums.

Hot spots at KMER

The FAA publishes 2 hot spots here but no shapes, so they are not drawn on the map. Brief the descriptions against the airport diagram.

HS 1 Complex area. Verify correct taxi route. Areas south of Twy A and Twy G are private ramp.
HS 2 Tfc congestion due to large volume of acft proceeding to and from Rwy 31.

Locations on the airport surface with a history of confusion or runway incursions — brief them against the diagram before taxi. Source: FAA Chart Supplement, reproduced verbatim on the 56-day cycle; the numbers match the circled HS markers on the diagram.

Takeoff, alternate and surface information

Takeoff minimums are published for KMER. Standard is 1 statute mile visibility for one and two engine aircraft (½ mile for more than two) unless this section says otherwise; Part 91 operators are not bound by them but the obstacle notes apply to everyone.
Non standard alternate minimums are published: if you file KMER as an IFR alternate, the required forecast is higher than the default 600-2 for precision or 800-2 for non precision approaches. Check the alternate rule tool.

All 8 charts, as a list every plate with its direct FAA link

Airport documents 3

Approaches 3

Minimums 2

MIN TAKEOFF MINIMUMS ↗
MIN ALTERNATE MINIMUMS ↗

Frequently asked

Where can I get the KMER airport diagram?

The FAA publishes the Castle airport diagram as part of the d-TPP (Digital Terminal Procedures Publication), reissued every 28 days. The current one is linked on this page, along with a full-page preview.

Does KMER have an instrument approach?

Yes. Castle has 3 published instrument approaches: ILS, RNAV (GPS). At least one offers vertical guidance.

Are there hot spots at KMER?

Yes. The FAA publishes 2 hot spots at Castle — locations on the airport surface with a history of confusion or runway incursions. Each one's Chart Supplement description is on this page, numbered the way the airport diagram marks it.

What is the lowest approach at KMER?

ILS to runway 31 is the approach type with the lowest published minimums at Castle. It has vertical guidance, so it is flown to a decision altitude rather than a minimum descent altitude. Actual minimums vary by aircraft category and are on the plate.

More about KMER

Charts are the FAA d-TPP (d-TPP cycle 2609 (2026, cycle 9)) and Chart Supplement, reissued on the 28-day chart cycle and linked directly from the FAA. For planning and education only; always fly the current chart.

Something here wrong or out of date? Report a data problem.