FAQs For The AV-30 General Installation & Applicability

This support article includes an array of frequently asked questions (FAQs) regarding installation for the AV-30 system. Topics include: general installation and applicability, operational limitations, installation limitations, and Interfaced Equipment Limitations.

General Installation & Applicability

What is the AV-30-C, and what are its primary functions post-installation? The uAvionix AV-30 is a versatile electronic flight instrument system (EFIS) designed to mount in the legacy 3-1/8" round instrument panel cutout found in light general aviation aircraft. It can be field-configured as a Primary Attitude Indicator (AI), a Primary Directional Gyro (DG), Slip/skid indicator, and is approved to replace existing standalone vacuum or electrically powered attitude indictors or directional gyro indictors listed on its Approved Model List (AML). 

Is professional installation required for the AV-30-C? For certified aircraft, professional installation is required. Owners of experimental aircraft may be able to perform self-installation under certain conditions. 

What installation limitation is mandatory concerning primary instruments? In installations where the primary attitude indicator is replaced, the existing airspeed indicator and altimeter instruments must remain in their current locations. 

What systems or sensors are required for all AV-30-C installations? All installations regardless of the operating mode (AI, DG, MFD< or CDI), require connection to pitot and static pneumatic lines. Pitot and static data are used for airspeed, altitude, attitude aiding (speed assist), and calculating the derived angle of attack (AoA). 

What are the electrical bonding and grounding requirements? The bond between the unit (measured at the D-sub screws) and the aircraft frame must be 2.5 milli-Ohms or less. The unshielded portions of the interface cables and ground drains must remain less than 2.5 inches in length. 

Can I connect the optional audio output is my aircraft is IFR capable and non-metallic? No. For IFR-approved non-metallic aircraft, the connection to the audio interface MUST remain disconnected due to indirect lightning protection limitations. 

Operational Limitations

Attitude Limits: The instrument has an attitude rate limit of +/-250 degrees per second, and an attitude operational range of 360 degrees Roll and 180 degrees pitch.

Altitude and Airspeed Limits: The AV-30-C has an Airspeed Operational Range of 40 to 300 Knots and an altitude Operational Range from -1000 to +25000 Feet. The maximum altitude for operation is 25000 feet. 

Angle of Attack (AoA): The AoA indication may become unreliable for maneuvers exceeding +/-8 G. The AoA indicator is designed for positive (upright) angle of attack warnings, and critical warnings for inverted flight will not be indicated. The AoA Operational Range is -10 degrees to +30 degrees, with a valid speed range from +25 to +300 kts.

Supplementary Nature of Most Functions: Although the AV-30-C is approved for primary attitude, Slip, Direction of Flight, and Navigation Indication (with optional AV-HSI), all other functionality is supplemental in nature and may not satisfy regulatory requirements for mandated instrumentation. 

Installation Limitations

Aircraft Class and Weight: Installation is restricted to CFR Part 23, Class I and II aircraft, with have a gross take-off weight of no more than 6000lbs.

Operational Ceiling: Installation is restricted to aircraft with a 25,000-foot maximum (or less) ceiling limitation.

Maximum Airspeed (VNE): Installation is restricted to aircraft with an airspeed equal to or less than 300 knot VNE.

Co-location with Existing Instruments: When the AV-30-C replaces the primary attitude indicator, the existing airspeed and altimeter instruments must remain in their current locations. 

Required Compass: A magnetic direction indicator (compass) must be installed in the aircraft. 

Interfaced Equipment Limitations

Autopilot Replacement Restrictions: The installation cannot replace a primary attitude indicator, flight director, or turn coordinator that is part of an autopilot system. If an existing attitude indicator is part of an autopilot it must be moved to a non-primary location before the AV-30-C can be installed in the primary location. 

Power Dependency of Accessories: Optional accessories (AV-Link, AV-APA, AV-HSI, and transponder) are not powered by the AV-30-C internal battery. Consequently, Wi-Fi traffic data, autopilot interface, navigation, and transponder functions will be unavailable during a power loss. 

AV-HSI Requirements: Due to the precise nature of IFR navigation, the AV-Mag is required when using the AV-HSI.

GPS/Navigation Data: GPS data received directly by the AV-30-C from Aviation or NMEA serial protocols does not provide IFR compliant lateral or vertical guidance; all deviation related data presented in this configuration is for VFR operations only. (must have IFR capable navigator connected through ARINC 429 to AV-HSI for full IFR navigation).

Maximum Connected AV-Links: If multiple AV-Link modules are installed in the aircraft, no more than two may be enabled simultaneously. 

FAA Documentation For Reference

PS-ACE-23-08 - Minor Alteration

AC 91-75 - Turn Coordinator Replacement