William Robert Johnston Municipal Airport
M90 has 1 runway. The longest is 15/33 at 3,499 ft × 50 ft (asphalt).
FAA NASR data, cycle 2026-09-03
M90 field elevation is 162 ft MSL. The standard traffic pattern altitude at M90 is 1,160 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
CTAF 122.9 MHz — M90 is non-towered; self-announce position and intentions on CTAF.
Check M90 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, M90 is a non-towered airport. The CTAF frequency is 122.9 MHz.
M90 has 1 runway (15/33). The longest runway is 3,499 feet.
M90 uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,160 feet MSL at a field elevation of 162 feet.
M90 (William Robert Johnston Municipal Airport) has a field elevation of 162 feet MSL.
M90 (William Robert Johnston Municipal Airport) is located in Mendota, CA.