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KMER · Castle Airport

ICAO · US · 11 NTSB events

ID KMER FAA MER Elev 191 ft Lat 37° 22.83' N Lon 120° 34.08' W Zulu …

Live conditions

METAR

fetching…

Wind / Visibility

—

Density altitude (now)

—

Decode in METAR tool TAF on AWC ↗ NOTAMs ↗

Aerial view

No FAA diagram published

Imagery © Esri, Maxar, Earthstar Geographics, USDA FSA

Runways

2 runway ends on file. Longest: 11,802 ft. Max gradient: 0.11%

Designator Heading Length Width Surface Lighting Gradient
13 141° 11,802 ft 150 ft PEM Yes 0.11%
31 321° 11,802 ft 150 ft PEM Yes 0.11%

Lengths + headings: in-app airport database. Surface, width, lighting: OurAirports. Gradient: derived from FAA NASR runway-end elevations (NASR's RWY_GRAD field is empty in 99.99% of rows).

Communications · 3 frequencies

  • AWOS AWO 3 124.475
  • A/D NORCAL APP/DEP 120.950
  • UNIC CTAF/UNICOM 123.075

Live ATC audio (streaming + archived): Open KMER on LiveATC ↗

Chart Supplement remarks, plain English · cycle 22JAN2026 · 2 matched · 22 not yet translated

Translations anchored to the FAA text; the raw FAA text is authoritative.

TL;DR

  • ·Non-standard pattern direction on Runway 13–31: right traffic. Watch for traffic from the opposite quadrant.
  • ·Pilot-controlled lighting: click mic 7 times on the CTAF to activate ALSF1 Rwy 13 and Rwy 31; HIRL Rwy 13–31. Lights stay on 15 minutes — click again to refresh.

Watch for

  • Non-standard pattern direction on Runway 13–31: right traffic. Watch for traffic from the opposite quadrant.

    right traffic

  • Pilot-controlled lighting: click mic 7 times on the CTAF to activate ALSF1 Rwy 13 and Rwy 31; HIRL Rwy 13–31. Lights stay on 15 minutes — click again to refresh.

    pcl ctaf

All translated remarks (2)

  • Non-standard pattern direction on Runway 13–31: right traffic. Watch for traffic from the opposite quadrant.

    Raw FAA text · preamble · operational

    RWY 13–31: H11802X150 (ASPH–CONC) S–155, D–200, 2S–175, 2D–4…

  • Pilot-controlled lighting: click mic 7 times on the CTAF to activate ALSF1 Rwy 13 and Rwy 31; HIRL Rwy 13–31. Lights stay on 15 minutes — click again to refresh.

    Raw FAA text · service · operational

    ACTVT ALSF1 Rwy 13 and Rwy 31; HIRL Rwy 13–31—CTAF

Not yet translated · raw FAA text (22 sentences)
  • ·112 CALIFORNIA ARCATA N40º58.89´ W124º06.50´ NOTAM FILE ACV.
  • ·(VL) (DH) VORW/DME 115.05 ACV Chan 97(Y) at California Redwood Coast–Humboldt Co. 194/17E.
  • ·S2 FUEL 100LL, JET A, A1 LGT ALSF1 Rwy 13–31 sequenced flashing lgts OTS indef.
  • ·PAPI Rwy 13 and Rwy 31 opr consly.
  • ·Attended Mon–Fri 1600–0100Z‡.
  • ·For arpt info 209–385–7686, extn 4180.
  • ·For fuel 0200–1700Z‡ call 209–725–1455.
  • ·Rwy 31 will be the designated calm wind rwy (wind 5 kts or less).
  • ·Opposite end of rwy not visible on tkf.
  • ·Rwy 13–31 1,000´ paved blast pad both ends of rwy.
  • ·When twr is clsd opposite direction tkfs and ldgs are not authorized.
  • ·Civilian and military training may occasionally cause pattern congestion.
  • ·When twr clsd maximum of 5 acft permitted in VFR traffic pattern at any one time and 2000´ ceiling and 3 miles visibility recommended.
  • ·Twy B clsd to acft greater than 30,000 lbs.
  • ·Rwy 13–31 180º turns prohibited.
  • ·AIRPORT MANAGER: 209-617-5399
  • ·CTAF 118.175 ATIS 124.475 UNICOM 122.95 ®NORCAL APP/DEP CON 120.95 TOWER 118.175 (1500–0500Z‡) GND CON 133.575 CLEARANCE DELIVERY PHONE: For CD when ATCT is clsd ctc NorCal Apch at 916-361-0516.
  • ·CLASS D svc 1500–0500Z‡; other times CLASS G.
  • ·EL NIDO (L) (L) VORW/DME 113.85 HYP Chan 85(Y) N37º13.17´ W120º24.01´ 305º 12.6 NM to fld. 184/15E.
  • ·LOC unusable byd 23º left and 25º right of course.
  • ·Unmonitored 0500–1500Z‡ daily.
  • ·KLAMATH FALLS H–3B, L–2I SAN FRANCISCO H–3B, L–3B IAP, AD SW, 22 JAN 2026 to 19 MAR 2026

Field profile

Use

Public-use

Ownership

Public

Scheduled service

No

IATA · MER

FAA Chart Supplement

NTSB events

11 NTSB-recorded events on file at this airport .

Total events

11

since 1982

Fatal

1

9.1% of total

Last 5 years

0

no recent events

Last 10 years

1

≈ 0.1/yr

Ranking across all airports · Open in accident map ↗

Operations volume

FAA TAF · history through 2024

2005 2024

Peak: 211,540 ops in 2007

2024 total

32,051

10-yr total

409,692

2024 mix

AC/AT 1% · GA 91% · Mil 8%

Events / million ops

2.4

last 10 years

Fatal / million ops

0.22

approximate · 10-yr scaled

Last 10 years · n=1

  • Hard landing 1

All time · n=11

  • Ground collision 2
  • Other 2
  • Engine failure / power loss 2
  • Stall / spin 2
  • Hard landing 2
  • Gear-up landing 1

Categories rule-matched from NTSB findings and probable-cause text. "Other" = not enough agency text to classify.

Date Aircraft · Classification · Wx Sev
2010-05-25 Cessna 152 · Ground collision · day →
2008-11-15 Cessna 152 · Ground collision · VMC · dusk →
2017-09-05 COBALT AIRCRAFT INDUSTRIES INC Co50 VALKYRIE · Hard landing · VMC · day →
2013-01-26 Cessna 152 · Engine failure · day →
2009-08-31 Cessna 152 · Hard landing · day →
2007-11-17 Cessna 172N · Other · VMC · day →
2001-01-13 Piper PA-22-150 · Stall / spin · VMC · day →
1999-09-17 Cessna 172N · Stall / spin · VMC · day →
1999-03-23 Beech 58 · Gear-up · day →
1998-09-26 Piper PA-28-180 · Other · day →
1998-09-26 Rockwell COMMANDER 114 · Engine failure · day →

Designees in CA

CFI Flight Instructors 5,776 A&P Mechanics 22,561 AME Medical Examiners (AME) 139 DME Mechanic Examiners (DME) 25 DPRE Parachute Rigger Examiners (DPRE) 1 DAR-F Manufacturing Airworthiness (DAR-F) 17 DAR-T Maintenance Airworthiness (DAR-T) 20 DER-Y Engineering — Company (DER-Y) 45 DER-T Engineering — Consultant (DER-T) 66 SAE Specialty Aircraft Examiners (SAE) 126 TCE Training Center Evaluators (TCE) 38 ODA Organizational Designations 11 Schools Flight Schools 243 FBO Fixed Base Operators 209 Clubs Flying Clubs 82 Repair Repair / Maintenance Shops 56 EAA EAA Chapters 63

DPEs nearby

Distance is city-centroid to airport, a first cut, not the exam location.

Designee City ST Distance
Scott Richard Siemiller Winton CA 2 nm
Kenneth Sebastian Cobb Columbia CA 40 nm
Robert Alan Davids San Andreas CA 49 nm
Margaret Watt Hollister CA 51 nm
James Eric Brannan Fresno CA 52 nm
Jimmy Louis Shamp Fresno CA 52 nm
Clayton Miles Conrad San Jose CA 60 nm
Jennifer Rayne Watson San Jose CA 60 nm
John Erich Sawatzky Oakley CA 65 nm
Brian Petschauer Burbank CA 65 nm

Showing 10 closest of ~1,400 DPEs nationwide. Source: FAA Designee Locator.

CFIs nearby

City-centroid distance; ratings as on the FAA certificate.

Instructor City ST Distance
Stephen Duane Harrison Atwater CA 2 nm
Joseph Rohn Davis Atwater CA 2 nm
Juan Jacobo Navia Medina Atwater CA 2 nm
Sarath Rajan Atwater CA 2 nm
Yeoungseon Ahn Atwater CA 2 nm
Prote Lumbu Nyembo Atwater CA 2 nm
Richard Eugene Eason Merced CA 6 nm
Arturo Erlindo Montanez Merced CA 6 nm
Jose Angel Hernandez Jr Merced CA 6 nm
Satinderpal Singh Livingston CA 8 nm

Showing 10 closest of ~70,900 active CFIs nationwide. Source: FAA Airmen Certification Database.

A&P mechanics nearby

City-centroid distance. A = airframe, P = powerplant, IA = inspection authorization.

Mechanic City ST Distance
John Barrett Brigham Atwater CA 2 nm
William Edward Effinger Iii Atwater CA 2 nm
Christopher John Marble Atwater CA 2 nm
Egisto Fred Salvatori Atwater CA 2 nm
Jerry Dee Thornton Atwater CA 2 nm
Jeffrey William Foltz Atwater CA 2 nm
Lance Carleton Estes Atwater CA 2 nm
Arthur Lee Jester Atwater CA 2 nm
David Lee Stephens Atwater CA 2 nm
Jeffrey Dana Mackessy Atwater CA 2 nm

Showing 10 closest of ~248,300 certificated mechanics nationwide. Source: FAA Airmen Certification Database.

Repair stations nearby

By airport location.

Shop Distance
Cutting Edge Avionics
San Andreas, CA
 46 nm
Stockton Propeller, Inc
Stockton, CA
 49 nm
Pacific Coast Avionics
Fresno, CA
 53 nm
Quality Aero Maintenance
Acampo, CA
 59 nm
Catto Propellers
Jackson, CA
 61 nm
NorCal Avionics, LLC
Watsonville, CA
 64 nm
Belardi Interiors, Inc
Watsonville, CA
 64 nm
Aviation Institute of Maintenance - Oakland, CA
Fremont, CA
 65 nm
LAC Avionics, Inc.
San Jose, CA
 65 nm
T & P Aero Refinishers
Salinas, CA
 66 nm

Showing 10 closest of ~400 geocoded shops in the repair-station directory. Source: AOPA business listings.