I believe that JCS is A73-66
Not sure about that but I flew many hours on A73-66. Our CO was Wing Commander Cy Greenwood and I checked him out on Lincolns. Wonderful character who was CO of the RAAF contingent during the Berlin Airlift and was also a former POW of the Japs.
He was attacking Jap floatplanes in Timor when his Beaufighter was shot down. His navigator was killed. Cy ditched the Beaufighter and the Japs machine gunned him in the water but he ducked under the water each time they came at him. He eventually swam to shore but was betrayed by a local native and was captured by the Japs.
When we flew together, I noticed he always shortened the words "Juliet" as part of the squadron call-sign, to "Julie" After that, he was referred to by our crews as Big Julie. Not to his face, of course.
After he left the RAAF with the rank of Group Captain, Big Julie became the manager of the then TAA Flight Simulator Training Centre next to Essendon Airport. He later died at age 84.