<Tr> <Th> Engines </Th> <Td> 1 solid </Td> </Tr> <Tr> <Th> Thrust </Th> <Td> 90.7 kN (20,400 lbf) </Td> </Tr> <Tr> <Th> Specific impulse </Th> <Td> 277 sec </Td> </Tr> <Tr> <Th> Burn time </Th> <Td> 45 seconds </Td> </Tr>

When did the first development flight of slv-3 take place