Inflight re-planning and application of regulatory factors
Hi
My question relates to the following scenario:
Dispatch has planned for a destination that is forecast to be dry (i.e. with a regulatory factor of 1.67 for jets).
On arrival there is rain and runway is wet.
After recalculating the landing distance, is there an in-flight requirement to apply the wet regulatory factor of 1.92
Though primarily these regulatory factors are a dispatch requirement but according to some, as long as it is not an emergency (land ASAP) situation these factors needs to be applied even in flight.
I am trying to find the ruling about this issue according to FAA and JAR/EUOPS.
Is there something in black and white?
Regards