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FAA Set To Publish Altimeter Upgrade Rule - Aviation Week

Detected July 22, 2026 · in Aviation Maintenance & Airworthiness (FAA)

FAA is set to publish a new rule requiring upgrades to aircraft altimeters to address interference from 5G C-band telecommunications. This will affect operators and repair stations that maintain aircraft with radio altimeters.

Aforeworn detected this change in the Aviation Maintenance & Airworthiness (FAA) space on July 22, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated High urgency. Part 145 repair stations, Part 135/121 operators, flight schools, corporate flight departments should confirm how it applies to their specific situation before acting. There is a time constraint attached: To be determined upon publication of the rule; expect compliance within 6-12 months.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Aviation Maintenance & Airworthiness (FAA) continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.

What changed

FAA will mandate altimeter upgrades to ensure compatibility with 5G C-band signals, likely through an airworthiness directive (AD).

Who it affects

Part 145 repair stations, Part 135/121 operators, flight schools, corporate flight departments

What you must do

Identify aircraft with radio altimeters that may be affected, plan for retrofit or replacement, and monitor FAA publications for the specific AD.

Deadline

To be determined upon publication of the rule; expect compliance within 6-12 months.

Source: https://news.google.com/rss/articles/CBMioAFBVV95cUxPS3lHVWQwb0VPV0FUNGNSLVJENWgtMHZncnpPMnpoY0l2WlpmQkpfam1xZXpyTUxJeUpZc2VNNGZoVG8wdktfWkFwcGxhTkpWRnhobGkwUGZ6bzUxcld5ZjRZX1otajdOWEE2NFh3dUVNMUMwaUNqUC0wdWpmeERieDJIOGdqQjMzYk1fUkl5T2daMVBkQl90bXJLdnB4TGFh?oc=5

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