William Robert Johnston Municipal Airport
M90 · Mendota, CA · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 08:33 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:41 AM | 12:41Z |
| Sunrise | 06:09 AM | 13:09Z |
| Sunset | 08:05 PM | 03:05Z |
| Evening civil twilight Loggable night begins | 08:33 PM | 03:33Z |
Plan a flight from M90
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 15LEFT traffic
- Heading
- 147° mag · 162° true
- Dimensions
- 3,499 × 50 ft
- TPA
- 1,200 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- CTAF
- 122.9
Enter the left downwind (heading 327°) on the 45° at 1,200 ft MSL (≈1,000 AGL).
More details — RWY 15
- Markings
- basic
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 15/33 | 3,499 ft |
Prefer one flat page? Full runway details for M90 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the M90 kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
PXN 112.60 · HYP 113.85 · CZQ 112.90 · +1
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| PXN · Panoche | VORTAC | 112.60 · 73X | Low | r066° / 19.8 NM |
| HYP · El Nido | VOR/DME | 113.85 · 85Y | Low | r162° / 27.7 NM |
| CZQ · Clovis | TACAN | 112.90 · 76X | — | r239° / 27.8 NM |
| NLC · Lemoore | TACAN | 113.30 · 80X | — | r308° / 31.6 NM |
Prefer one flat list? All M90 frequencies →
Charts & procedures
Airport info
Airport information
- FAA LID
- M90
- Coordinates
- 36.7586, -120.3710
- Elevation
- 162 ft MSL
- Magnetic variation
- 15E
- Sectional chart
- SAN FRANCISCO
- Airport use
- Public
- Status
- Closed indefinitely
- Control tower
- No
- ARTCC
- OAKLAND (ZOA)
- Flight service (FSS)
- RANCHO MURIETA · 1-800-WX-BRIEF
- NOTAM facility
- RIU
- Attendance
- UNATNDD
- Segmented circle
- Yes
- Wind indicator
- yes
- Activated
- 1957/08
- Distance from city
- 0 E
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Parking
- tiedowns
Ownership & management 2 contacts
Remarks FAA · 8 notes
General
- FOR CD CTC NORCAL APCH AT 916-361-0516.
- PARL TWY ROUGH/UNEVEN SFC; EXTSV ASPH RPR AND PATCHING.
- ARPT CLSD UNTIL FURTHER NOTICE.
Runways
- MARKINGS FADED.
- MARKINGS FADED.
- RWY 15/33 IS POTHOLED WITH AREAS OF COLLAPSED PAVEMENT.
Obstructions
- APCH RATIO TO DSPLCD THR 50:1.
Contact
- CITY MANAGER X 109.
Nearby airports
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Also nearby: F34 Firebaugh Airport (8 NM) · CA32 San Joaquin Airport (private) (12 NM) · 49CL El Peco Ranch Airport (private) (13 NM) · CL01 Eagle Field (private) (17 NM) · 28CA Dos Palos Airport (private) (18 NM)
About M90
William Robert Johnston Municipal Airport (M90) is an airport in Mendota, CA, at 162 ft MSL. It has 1 runway, the longest 3,499 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for M90, refreshed from the Aviation Weather Center and FAA NASR.
Does M90 have a control tower?
No. William Robert Johnston Municipal Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at M90?
William Robert Johnston Municipal Airport has 1 runway; the longest is 3,499 ft. See the Runways section for headings, surface, and lighting.
Where is M90?
William Robert Johnston Municipal Airport is in Mendota, CA, at an elevation of 162 ft MSL. Coordinates: 36.7586, -120.3710.
Fly out of M90 often?
Save M90 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open M90 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.