Portland Mulino Airport
4S9 has 1 runway. The longest is 14/32 at 3,425 ft × 100 ft (asphalt).
FAA NASR data, cycle 2026-09-03
4S9 field elevation is 260 ft MSL. The standard traffic pattern altitude at 4S9 is 1,260 ft MSL (1,000 ft AGL). Fuel available at 4S9: 100LL.
FAA NASR data, cycle 2026-09-03
CTAF 123.05 MHz — 4S9 is non-towered; self-announce position and intentions on CTAF.
Check K4S9 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 4S9 is a non-towered airport. The CTAF frequency is 123.05 MHz.
4S9 has 1 runway (14/32). The longest runway is 3,425 feet.
4S9 uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,260 feet MSL at a field elevation of 260 feet.
Yes. 4S9 (Portland Mulino Airport) has 100LL available. Call the field for hours, self-serve availability and price.
4S9 (Portland Mulino Airport) has a field elevation of 260 feet MSL.
4S9 (Portland Mulino Airport) is located in Portland-Mulino, OR.