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Requirements for Interference-Tolerant Radio Altimeter Systems

Detected July 29, 2026 · in Aviation Maintenance & Airworthiness (FAA)

FAA mandates interference-tolerant radio altimeters for aircraft operating in certain airspace; compliance required by a specified date.

Aforeworn detected this change in the Aviation Maintenance & Airworthiness (FAA) space on July 29, 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, and any aircraft owner/operator with radio altimeters. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Not specified in excerpt; check the full rule for effective date and compliance deadlines.. 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

New requirements for radio altimeter systems to be interference-tolerant, likely involving hardware upgrades or modifications.

Who it affects

Part 145 repair stations, Part 135/121 operators, flight schools, corporate flight departments, and any aircraft owner/operator with radio altimeters.

What you must do

Review the final rule for specific compliance deadlines and retrofit requirements; plan for installation of compliant systems.

Deadline

Not specified in excerpt; check the full rule for effective date and compliance deadlines.

Source: https://www.federalregister.gov/public-inspection/2026-15585/requirements-for-interference-tolerant-radio-altimeter-systems

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