Mark
Following correspondence I have received information which has resulted in the database being changed to the following
AE26BA,6603,6324,Eurocopter MH-65D Dolphin,US - Coast Guard,,AS65
AE26BB,6604,6794,Eurocopter MH-65D Dolphin,US - Coast Guard,,AS65
AE26BC,6605,6796,Eurocopter MH-65D Dolphin,US - Coast Guard,,AS65
AE26BD,6606,6801,Eurocopter MH-65D Dolphin,US - Coast Guard,,AS65
AE26BE,6607,6804,Eurocopter MH-65D Dolphin,US - Coast Guard,,AS65
AE26BF,6608,6814,Eurocopter MH-65D Dolphin,US - Coast Guard,,AS65
6601 was last noted stored on a pallet at Elizabeth City & even though it was upgraded to an MH-65C, it seems not to have underwent conversion to MH-65D standard. It would appear that the mode-s installation only occurred when they were upgraded to MH-56D standard so will not have been allocated a code
6602 is still an MH-65C and it may be the case that as it wasn't slated for upgrade to MH-65D standard as per the foregoing, it also is not fitted with Mode S transponders & so hasn't been allocated a hex code.
Many thanks for bringing to my attention
Alan