EASA SIB AIR-21-15R1
Oct 13, 2021Aeroplanes with Honeywell Primus II Radio System with Radio Management Unit (RMU) 855 - Navigation System
The FAA Special Airworthiness Information Bulletin SAIB: AIR-21-15 R1 provides information regarding the Honeywell Primus II Radio System with Radio Management Unit (RMU) 855 installed on various aircraft models including 328 Support Services GmbH Model 328-100 and -300, Learjet Model 45, Embraer EMB-135 and EMB-145 series, Textron Aviation models 500, 550, 560, 650, Hawker 800 series, Bombardier CL-600 and BD-700 series, Viking Air CL-215-6B11, and Textron Aviation Model 750. The bulletin addresses the potential for inadvertent disabling of the Automatic Dependent Surveillance–Broadcast (ADS-B) Out function due to certain avionics power-up sequences involving the RMU-855. This is an informational bulletin and does not mandate regulatory action.
Safety Information Bulletin
- Bombardier BD-700
- Bombardier CL-600 (Challenger)
- Deutsche Aircraft Gmbh Dornier 328
- Embraer EMB-135
- Embraer EMB-145
- Learjet, 45
- Textron Aviation 500
- Textron Aviation 550 (Citation)
- Textron Aviation 560
- Textron Aviation 560XL
- Textron Aviation 650
- Textron Aviation 750 (Citation X)
- Textron Aviation Hawker
- Viking Air CL-215