TIB709Y was on 172 that day, spotted during PM peak, dunno if
replacement or there was 2 DAF that day
That day actually TIB709Y, TIB715D and TIB723E were all on
172... iirc both TIB709Y and TIB715D were spotted in the morning
while TIB723E was on AP slot and spotted it at night...
TIB709Y and TIB723E was spotted on service next few days but
TIB715D seem disappeared.. it was constantly on 172 for almost a
week before that day...