Aircraft	ATR72-200 (EI-REJ)
Airline	Aer Arann
Name	Captain : P Busche & First Officer: I Mulholand
Date	25 Mar 2009
Groundspeed	431 kts
Notes	Speed recorded in the descent in to LTN just approaching ROGBI. Tailwind was 130kts t FL230 and we had achieved 382kts in the cruise earlier in the flight