RM-855 Radio Management Unit
Overview
The RM-855 Radio Management Unit (RMU) is a fully compatible replacement of the RM-850 with enhanced reliability and capability based on a liquid crystal display unit for additional functionality. The RM-855 RMU is the primary interface used to control the Primus II radio system in the Primus 1000 and Primus 2000 flight decks.
The RM-855 Radio Management Unit (RMU) is mounted in the cockpit panel and is the primary interface used to control the radio system functions. The RMU software will need to be upgraded to either the -97X or -98X versions in order to provide the control, testing, and additional failure indications of the ADS-B Out functionality (ADS-B FAIL and ADS-B DGR). The RMU software upgrade will allow for additional communication to the RCZ cluster module on the radio system bus and display of the additional RCZ configuration straps in the maintenance pages.
Required for the 2020 ADS-B Out Mandate on the following aircraft:
The RM-855 Radio Management Unit (RMU) is mounted in the cockpit panel and is the primary interface used to control the radio system functions. The RMU software will need to be upgraded to either the -97X or -98X versions in order to provide the control, testing, and additional failure indications of the ADS-B Out functionality (ADS-B FAIL and ADS-B DGR). The RMU software upgrade will allow for additional communication to the RCZ cluster module on the radio system bus and display of the additional RCZ configuration straps in the maintenance pages.
Required for the 2020 ADS-B Out Mandate on the following aircraft:
- Bombardier Learjet 40 / 45 & 70/75
- Embraer Legacy 600 / 650
- Gulfstream PlaneView Cockpits G350 / 450 / 500 / 550
- Textron Cessna Citation VII, X, Model 560 (Ultra, Encore, Excel and XLS)
- Textron Hawker 800
Compatible Aircraft
Bombardier Learjet 40 / 45
Bombardier Learjet 70/76
Embraer Legacy 600 / 650
Gulfstream PlaneView Cockpits G350 / 450 / 500 / 550
Textron Cessna Citation Model 560 (Ultra, Encore, Excel and XLS)
Textron Cessna Citation VII
Textron Cessna Citation X
Textron Hawker 800
Specifications
Key Differentiators
Features & Benefits
- High frequency tuning, NAV Radio back up tuning, 3rd Com tuning
- Option to show a navigation radio magnetic indicator and engine backup display on the RMU
- Required for ADS-B Out mandate
- Switch COM radios from voice to data mode (when equipped)
- Upgrades are easier - software only
