Install the Rangr FDL-978 TXL IAW AC20-165B Airworthiness Approval of Automatic Dependent Surveillance - Broadcast OUT Sytems Date 12/07/15 and AC43,13-2B Acceptable Methods Practices - Aircraft Alterations Date: 3/3/08. Tested with no reported errors on 11/115/2016 UTC. Updated POH accordingly.