Production Data

CT-4 qty 2 s/n 001 - 002  
S/n 001 was retained as a demonstrator and then eventually sold to a NZ syndicate who still operate it today.
S/n 002 was the only single control CT-4 ever built. It was gifted to the King of Siam (Thailand).
CT-4A qty 61 s/n 003 - 063  
S/n 003 - 026 sold to RTAF (many still operating today)
S/n 027 - 063 sold to RAAF (most on Australian civil register today. 3 in USA)
CT-4B qty 14 s/n 064 - 077  
Not the same as a civil CT-4B model.
S/n 064 - 077 sold to Breco and never delivered. Converted to CT-4A model and sold to RAAF. S/n 065 now owned by PAC as ZK-PAC (prototype CT-4E).
CT-4B qty 19 s/n 078 - 096  
S/n 078 -096 sold to RNZAF. Traded in on CT-4E models in mid 1990s. Converted by Aeromotive to civil CT-4B and most now operated by BAe Systems Australia.
CT-4B qty 18 s/n 097 - 114  
The only civil CT-4Bs ever produced.
S/n 097 - 108 sold to BAe/Ansett.
S/n 109- 114 sold to RTAF.
CT-4E qty 40 s/n 200 - 240  

S/n 200 - 212 sold to Aeromotive (leased to RNZAF)
S/n 213 - not produced.
S/n 214 -215 sold to RTAF.
S/n 216 - sold privately in Israel.
S/n 217 - 230 sold to RTAF.
S/n 231 - 232 sold to DSTA Singapore.
S/n 233 - 240 sold to RTAF
S/n 241 - Company Demonstrator

CT-4 Model Development
CT-4C - Allison 250 powered Turbine variant developed but not certified on loan RNZAF s/n 088, returned to RNZAF as CT-4B.
CT-4CR - Allison 250 powered turbine variant with retractable undercarriage. 
CT-4D - Original RNZAF model designation. Later revived as a Textron Lycoming TIO-360 powered variant.