Robinson R44 Raven II — Service Bulletins

This document is a service bulletin (SB-117) for the Robinson R44 series helicopters, specifically addressing compliance with FAA airworthiness directive AD 2023-11-07. The bulletin is directed towards owners, operators, and maintenance personnel of R44-series helicopters equipped with radar altimeters. It outlines the necessary actions to ensure compliance with the directive, which involves adding a specific page to the limitations section of the Pilot’s Operating Handbook (POH) for affected helicopters. The compliance procedure must be completed within the next 100 flight hours or by March 31, 2025, whichever comes first. The bulletin emphasizes the importance of addressing potential interference from 5G C-Band wireless broadband transmissions that could affect radar altimeter operations.

• Compliance with AD 2023-11-07 is required within 100 flight hours or by March 31, 2025.
• Affected helicopters are those equipped with radar altimeters operating in the U.S. or equivalent jurisdictions.
• Operators must verify the inclusion of the Radio Altimeter Flight Restrictions page in the Pilot’s Operating Handbook.
• Certain operations are prohibited due to 5G C-Band interference, including specific approaches and autopilot modes.
• No parts are required for compliance; only labor is needed (0.2 labor-hour).