Pavla 1/72 Vultee BT-13
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The BT had a macho radio mast.  It is music wire, as is the pitot tube.  The shark fin from the kit's plastic pitot is grafted on.  The red patch below the aft canopy is the
fire extinguisher placard.  On many US trainers the same mount was used, and it was a plate that hinged out so that when closed the
extinguisher was available inside but when open could be accesed from outside.