User's Manual

TT21/TT22 Transponder Installation Manual 13 July 2009
00560-00 Issue AF
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Trig Avionics Limited Page 7
3.4 Installation Approval
The conditions and tests required for the TSO approval of the TT21/TT22
Mode S Transponder are minimum performance standards. It is the
responsibility of those desiring to install this transponder on or within a
specific type or class of aircraft to determine that the aircraft operating
conditions are within the TSO standards. The transponder may be installed
only if further evaluation by the user/installer documents an acceptable
installation that is approved by the appropriate airworthiness authority.