uAvionix’s AV-20-S multi-function display has been approved by the FAA as a clock replacement for Part 23, Class I and II Instrument Flight Rules (IFR) aircraft.
The AV-20-S Non-Required Safety Enhancing Equipment (NORSEE) certification has been updated to reflect the approval, according to company officials.

In addition to a clock replacement, the uAvionix AV-20-S adds a suite of in-flight information to the panel. Designed to fit in a standard 2-1/4-inch round instrument opening, the AV-20-S offers a Standby Attitude Indicator, Angle of Attack, Bus Voltage, Slip/Skid Indication, Outside Air Temperature, Density Altitude, G Meter, and more — all protected with a 30-minute internal battery backup for uninterrupted function in the event of power loss, company officials explained.
AV-20-S Features and Functions
- Digital Clock
- Angle of Attack (AoA)
- G- Meter
- Attitude Indicator (AI)
- Slip/Skid Indicator
- Outside Air Temperature
- Bus Voltage
- Count Up/Count Down Timers
- Engine Run Timer
- Flight Timer
- Density Altitude Display (OAT Required)
- True Airspeed (OAT Required)
- Customizable Audio Alerts
- tailBeaconX Transponder Control (non-certified aircraft only)

The AV-20-S (NORSEE) multi-function display is priced at $895.