Certain workers are not subject the 48 hours regulations, because they are governed by sector-specific provisions.
Air transport, is covered by the Aviation Directive (2000/79/EC). This Directive affects all mobile workers in commercial air transport (both flight crew and cabin crew), but not workers employed in General Aviation.
It appears that any amendment to the rule will effect only those workers in GA
References
DTI and
Directive 2000/79/EC