EDIT: I misread the datafile, VH-TBM is indeed XA-SLG - sorry!
VH-TBM 21171 1232 B727-276(A)(WL) JT8D-15(HK3) 11/18/76 AVIACSA XA-SLG
Flight Detent, could this be yours?
VH-TBH S 20553 991 B727-276(A) JT8D-15 11/20/73 AUSTRALIAN AIRLINES
N1787B [B/U @ GREENWOOD, MS JUN92]
There were dozens of operators with -17 engines, not sure how many
pax tho
Cheers,
M