BOMBARDIER CHALLENGER 850 — Service Bulletins

This document is a service bulletin for the Bombardier Challenger 850, addressing the risks associated with 5G C-Band interference on radio altimeters. It provides guidance on compliance with FAA and TCCA airworthiness directives regarding the operation of aircraft in the presence of 5G technology.

• All Challenger models are affected by 5G interference on radio altimeters.
• Operators must revise the AFM by June 30, 2023, to include new limitations.
• Radio altimeter tolerant aircraft must have specific equipment installed by February 1, 2024.
• The FAA has defined 'radio altimeter tolerant' and 'non-radio altimeter tolerant' aircraft.
• No actions are required for radio altimeter tolerant airplanes under the new directives.
• All Bombardier aircraft are currently classified as non-radio altimeter tolerant.
• Operators must inform flight crews of new limitations after AFM revisions.
• The document includes references to multiple FAA and TCCA directives.