C-CSZB being towed at ABZ, 1996, BWA livery by this time.
I remember the BAF operation at ABZ > LSI - at peak 3x Viscounts based, usually 2x blocks of flights M-F:
Flight Nos. 8501 > 8508; 8509 > 8516 (although 8515/6 was more oft than not canx or non-op
On particular busy periods (Christmas changeovers or upmanning) there was a 3rd block, Flight Nos. 8517 > 8522, even on occasions a further flight 8523/4.
Odd flight Nos. up to LSI; evens back to ABZ.
Those were the days!