I will try to Answer for you Max
Number of PAL systems I belive two in AUST both operation instrutions in ERSA.
Qantas Maunal not much in any operators Manuals I dont know(Trainning).
Windsocks at YMLT both flash and auidable warning during last 10 mins (Nice Voice too). But of course if you are lined up and the lights have not been activated none of these sytems work, Even the one to get a Tarmac Terrier to hit the override for Perminent actiation till ATC is back on shift.
to me its simple if the "On" switch don't work fix it before you leave.
PS Im not an english teacher and can't find spell cheque .LOL
