Key Takeaways
- The FAA proposes replacing or upgrading 58,600 radio altimeters.
- Estimated cost: about $4.5 billion.
- New rules aim to ensure accurate height-above-terrain data in airspace of the 48 contiguous US states.
The Federal Aviation Administration has proposed new rules requiring US aircraft operators to replace or upgrade radio altimeters due to potential interference with wireless carriers’ services in the Upper C-band. The estimated cost is about $4.5 billion, and compliance will be staggered over several years. The proposal aims to preserve safe, efficient, and reliable aviation operations as wireless carriers expand services in spectrum adjacent to the band used by radio altimeters.