> For the complete documentation index, see [llms.txt](https://bell-505-guide.gitbook.io/bell-505-maintenance-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bell-505-guide.gitbook.io/bell-505-maintenance-guide/system-descriptions/integrated-avionics-systems/indicating-recording-systems.md).

# Indicating/Recording Systems

The indicating/recording system uses the Garmin G1000H Integrated Avionics System (IAS) to integrate the interaction the pilot has with the helicopter. It combines the primary flight instruments, helicopter systems instrumentation, and navigational information provided by the navigation systems.

The Garmin G1000H IAS consists of several Line Replaceable Units (LRUs) that facilitate troubleshooting and maintenance by being quickly and easily replaceable.

The indicating/recording system consists of the systems that follow:

* [Miscellaneous control panel](#miscellaneous-control-panel)
* [General computers](#general-computers)
* [Central warning system](#central-warning-system)
* [Central display system](#central-display-system)

## Miscellaneous control panel

The miscellaneous control panel provides the pilot one convenient central location to control the panel lights, hydraulic system, operation of the engine, pitot heater, position lights, anti-collision light, reversionary mode of the central display system, generator, and battery. For a system discussion and/or description, refer to [Instruments and Control Panels](/bell-505-maintenance-guide/system-descriptions/integrated-avionics-systems/indicating-recording-systems/instruments-and-control-panels.md).

## General computers

The general computers system is at the center of the Garmin G1000H integrated avionics system. It links most helicopter systems and LRUs, and the central display system. It consists of the integrated avionics unit (GIA) and the engine and airframe interface unit (GEA). For a system discussion and/or description, refer to [General Computers](/bell-505-maintenance-guide/system-descriptions/integrated-avionics-systems/indicating-recording-systems/general-computers.md).

## Central warning system

The central warning system includes the Crew Alerting System (CAS) function and the RPM annunciator. For a system discussion and/or description, refer to [Central Warning System](/bell-505-maintenance-guide/system-descriptions/integrated-avionics-systems/indicating-recording-systems/central-warning-system.md).

## Central display system

The central display system shows flight instruments, helicopter systems, and navigation information processed by the G1000H IAS. It is also used to interact with the various helicopter systems. Components provide a reversionary mode to show all the information on one display unit when a unit fails. For a system discussion and/or description, refer to [Central Display System](/bell-505-maintenance-guide/system-descriptions/integrated-avionics-systems/indicating-recording-systems/central-display-system.md)


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