The power turbine can overspeed for up to 15 seconds, the actual time depending on a graph in the Flight Manual.
The fuel pump caution light comes on if one or both fuel boost pumps fail. If one goes, reduce altitude to below 6000 feet. You will see the pressure drop if both fail. If a single pump fails, your unuseable fuel becomes 10 US gals, and an unusual attitude with that little fuel may cause the pump to be exposed and start sucking air instead.
Anti-ice should be off for startup and on for flight in visible moisture below 4.4 degs C. N1 and TOT will rise when it is on.
The restriction in forward speed with doors off is there because the airflow becomes disturbed around the stabilizer on the tailboom, which keeps the tail down in the cruise. As the airflow is not constant at high speeds, you can run out of aft cyclic if the nose pitches too far forward.
Specimen Performance Data
TOD to Acc Ldg  Length 
100' dist dist 
263m 84m 229m  12m 

For getting in and out of clearings, a good rule of thumb is to note the torque at 80 kts at 500' above the landing area. Add 20% to hover IGE, and another 10% to climb back out. Add 1% extra for every 15 kg you pick up.

Starting limits
40 kts on nose, 25 kts from side, 0 kts on the tail.

C of G
The limits vary with the All Up Weight, but they all start at 106” aft of datum (the datum itself is 55.16” forward of the jackpoint centreline). At 2350 lbs, the aft limit is 114.2”, decreasing through 112.1” at 3000 lbs and 111.4” at 3200 lbs. The aft limit is always 111.4” with any combination of doors removed. Lateral C of G limits are from 3” left to 4” right.
The 206L’s range is 118-128.5” at 2350 lbs, 118.3-128.3” at 3000 lbs and 119.2-126.7” at 4200 lbs. Laterally, 4” left to 3.5” right. Here is a chart of arms for the BII & III:
Longitudinal  Lateral 
Pilot Door (10 lbs) 61 15 
Duals (6.4 lbs) 49 -13.9 
Pilot 65 14 
Pax F 65 -11 
Pax RL 104 -16.1