User's Manual
TT21 Transponder Installation Manual 19 January 2009
00560-00 Issue AA
13.3 Front Panel Cut-out Options
The front panel controller can be fitted to either the compact mounting hole or a conventional 57mm (2ΒΌ inch) instrument cut-out. The compact mounting is a truncated 58
mm opening; please note that the mounting screws are NOT in the same location for the two options.
All dimensions in millimetres.
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Page 32 Trig Avionics Limited