Description:
This Service Bulletin provides instructions for loading uAvionix AV-20-S UAV-1003310-001 with updated software release 1.8.0. For increased performance in attitude indicator mode, the pitot and static pneumatic lines shall be connected if not already installed. This Service Bulletin does not describe or provide authority for the work to connect the pitot and static pneumatic lines.

Products Affected:
This Service Bulletin applies to the FAA NORSEE-approved uAvionix AV-20-S UAV-1003310-001, with operating software releases 1.1.0, 1.2.0, or 1.7.1.

 

Change History:

v1.7.1 to v1.8.0

  • Improved Angle of Attack (AoA) algorithm
  • All AoA graphs are now 10 bars: 6 green, 2 yellow, 2 red
  • AoA limits are settable with 0.5 unit resolution
  • Add slip, roll, and pitch trim to the SETUP menu
  • Remove PITCH SYNC function
  • Improved automatic brightness algorithm
  • Add analog clock face
  • G meter now on a separate page from AoA
  • Add dial view of G meter
  • G limits how have 0.1 g resolution
  • Visual alerts can now be individually disabled
  • Improve AI error correction time when speed assist is enabled
  • Add turbulence detection to improve the attitude indicator
  • Pitot-Zero airspeed trim no longer requires a reboot after the pitot-zero procedure
  • Menu typo fix and various low-level changes for operational efficiency

v1.2.0 to v1.7.1

  • Fix negative density altitude display issue
  • Improve OAT accuracy
  • Numerically round the OAT value display
  • Fix display of TAS and DALT at the range limits
  • Synchronize ADAHRS algorithm with AV-30 implementation
  • Add IAS trim and pitot-zero procedures to remedy false airborne state
  • Add multi-point altitude calibration procedure
  • Improve accuracy of user timers
  • Remember user timer values between power cycles
  • Fix local time display issue when using 12h format
  • Improve field software update procedure for reliability
  • Fix setup menu jump when scrolling
  • Fix right button bug when page scrolling
  • Fix a variety of low level software defects
  • Optimize the execution of low level software