Add an FDP Limitations Control that looks at Duty

The FDP control allows for the following limitations to be put in place:

• If non-flying duties were performed in thehours prior to a FDP commencing, the maximum FDP allowed must be decreased by the greater of:

X Minutes or

X% of non-flying duties performed during the X hours prior to commencing the FDP

• The maximum allowable FDP after a call out from standby must be decreased by the number of hours by which the standby exceeds X hours

It would be handy to also have a control that looks at Duty instead so Clients that don't use the FDP fields can also utilise these limitations