Hirobo DDF-SST Agusta 109 (1984)
84 catalogue details 
Developed from the Falcon fuselage the SST mechanics for use in scale fuselages.
Fitted with the new rotor head design DDF (Dual Damped Flapping) but did not feature retracting undercarriage.
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Photo of plan for DDF Mechanics
Hirobo BBL-SST Agusta 109 (1987 Year TBC)
87 catalogue photo 
Hirobo Shuttle Agusta 109
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95 catalogue info
'30'size for Shuttle mechanics