Birch Creek Airport
Z91 has 1 runway. The longest is 16/34 at 4,000 ft × 75 ft (gravel).
FAA NASR data, cycle 2026-09-03
Z91 field elevation is 450 ft MSL. The standard traffic pattern altitude at Z91 is 1,450 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
CTAF 122.9 MHz — Z91 is non-towered; self-announce position and intentions on CTAF.
Check Z91 against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, Z91 is a non-towered airport. The CTAF frequency is 122.9 MHz.
Z91 has 1 runway (16/34). The longest runway is 4,000 feet.
Z91 uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,450 feet MSL at a field elevation of 450 feet.
Z91 (Birch Creek Airport) has a field elevation of 450 feet MSL.
Z91 (Birch Creek Airport) is located in Birch Creek, AK.