5G C-Band Aviation Interference
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-07-31 — Upper C-Band (3.98-4.2 GHz); Expanding Flexible Use of the 3.7 to 4.2 GHz Band: FCC Upper C-band (3.98–4.2 GHz) final rule requires new flexible-use licensees to fund aircraft radio-altimeter retrofit rebates, extending the aviation-coexistence mitigation approach from the Lower C-band into the adjacent 160 MHz block ahead of a July 2027 auction. (novelty: 3)
Open questions
Related
Contributing findings
Upper C-Band (3.98-4.2 GHz); Expanding Flexible Use of the 3.7 to 4.2 GHz Band
31-jul-2026
novelty 3
per-area 3
strengthens
Airworthiness Directives; Transport and Commuter Category Airplanes
30-jun-2026
novelty 2
per-area 2
strengthens