Whispering 'T' jet
I worked many hours on the TAA 72's. I think the Boeing manufacturing process was superior to that of Douglas, BAE and the like. Once familiar with the various ins and outs of the aircon system it was a piece of cake to maintain. I have even carried out an APU change (cold unit) on a turn around, albeit whilst working for SAA and the muscle were all Zulu warriors, singing as hefting the U/S unit out and installing the new one!