AD 2010-20-24 on Eclipse Jet EA500

SUMMARY: The FAA is adopting a new airworthiness directive (AD) for the
products listed above. This AD requires incorporating changes to the
electronic flight information system and the airplane flight manuals. This
AD was prompted by reports of uncommanded changes to the communications
radio frequency, altitude preselect, and/or transponder codes.

The FAA is issuing this AD to correct faulty integration of hardware and
software, which could result in unannunciated, uncommanded changes in
communications radio frequency, transponder codes, and altitude preselect
settings. These uncommanded changes could result in loss of communication
with air traffic control due to improper communications frequency, autopilot
level off at the incorrect altitude, or air traffic control loss of proper
tracking of the aircraft.

This AD is effective November 9, 2010.

Click Link to full AD below for more information

2010-20-24.pdf