Hi again B747skipper.
Sure does identify the aircraft.
N792FA, registered at the time to FB Ayer and Associates, was broken up at Pinal in 1983.
She was delivered to QANTAS on 10th Sept. 1959, as VH-EBF ( B707-138 ), with the earlier JT3C-6, then sent back to Boeing in 1961 to be fitted with the turbofan JT3D-1, and redesignated as a -138B. Sold to Standard Airways on 26th March 1968, and re-registered N792SA ( Standard Airways purchased four of the -138Bs ). After working with Standard she moved on, and went through registrations D-ADAQ, TC-JBP and finally as you saw her as N792FA.
Thanks so much for the information, and relaying your flying of her.
We are hoping to organise a photo shoot on the QANTAS Jetbase here in Sydney with JT's -138B, a B747-400 and another historic type of which QANTAS flew with great success.