No, that's not quite it. You may not be scheduled for more than 8 hours of flight time in any given duty period. However, since more than one duty period may be found in a 24 hour period, you must have the prescribed amount of normal (or reduced) rest in those 24 hours. For instance, let's say someone is scheduled to be on duty from 0600 to 1000 with 3 hours of flight time. After a 12 hour rest, he/she begins another 8 hour duty period ending at 0600 with 6 hours of flight time. The total amount of flight time scheduled in the 24 hours is 9 and within that 24 hours he/she must have at least 11 hours of consecutive rest. In the example given, it is legal because the required rest was there and no more than 8 hours of flight time was found in any duty period between required rest periods.
