Two pattern aircraft for German Army (HEER) for the CH-53G programme to used for trials and homologations by Luftwaffe WTD61 List of Operators of S-65C-1 Years Model Org 1970/11 Heeresflieger Global Distribution of S-65C-1 2S-65C-1 Construction Numbers C/N Year History 65-156 1970 154885,84+01 65-157 1970 154886,84+02
Heeresflieger 
154885,84+01 