Gagan has made a valid point.
Everybody check out this in case you missed it.
Please open this link.
AIRCRAFT
Go to
APPROVED FIRMS on the left hand side and open
Eastern region.pdf in
Region wise approval section and find Beech duchess 76.
It shows under Serial no. 16 - Govt. of Bihar and validity of approval is 02-08-2011.
What's this mean?