TRD - Trinidad & Tobago :

BWIA Piarco TRD-71
C&W Port of Spain TRD-31
  NDB Port of Spain *TRI TRD-21
  NDB Tobago *TAB TRD-24
North Post Radio (9YL) TRD-73
Piarco Aero TRD-74
  T&TETC Port of Spain TRD-20