Depone, correct. You have to be on standby for at least 6 hours before that happens. Doesn't really fit in with an early call does it?!
If, for instance, you were on standby at 6am local and you were called at 6 what would be your allowable FDP for 2 sectors?
If you were on standby at 6 but they called you at 5 what would your allowable FDP be?
A - 12.25 hours
B - 10.25 hours
If you then go and do a 12 hour day are you operating illegally or into discretion or is that entirely acceptable?