The fuel burn for the ATR72-212 is roughly 600 pounds per hour per engine on takeoff, and 450 pounds per hour per engine in cruise.
The 72 has 3 settings for flaps - 0, 15, and 30 degrees (it's actually 33 degrees but called 30!)
I'm sure a 30 degree flap takeoff could be done, but I have never seen a performance chart with these numbers. The lift/drag maximum coefficient for the ATR72 is with the flaps at 15, so flaps 30 would mean a decrease in takeoff performance. In addition, an engine failure on takeoff would be significantly more difficult to handle with the added drag of flaps 30.
The ATR 72 is equipped with an ATPCS (Automatic Takeoff Power Configuration System). The Configurations are tested 2 ways:
1) Depressing the ATPCS TEST Pushbutton will test for flaps at 15 degrees, the Pitch Trim is set in the green arc for takeoff, the Travel Limiter Unit for the Rudder is set to LOW SPEED (full deflection of the rudder is allowed below 180 knots), the Aileron gust lock is OFF, the Power Management Selector is set to TAKEOFF and an automatic recall of cautions/warnings on the Crew Alerting Panel.
2) When the Power Levers are advanced past 49 degrees Power Level Angle, the ATPCS recalls the Crew Alerting Panel to verify that the Parking Brake has been disengaged.
The ATPCS will arm automatically with the Pushbutton depressed (system turned on), the Power Management Selector in the TAKEOFF position, both Power Levers above 49 degrees Power Lever Angle and both engines producing at least 46% Torque. The ATPCS activates if an engine falls below 18% torque (considered engine failure). What happens depends on where the system was armed:
On the ground - an immediate power UPTRIM (increase) on the good engine to Reserve Takeoff Power (usually 100% Torque) and after 2.15 seconds, the failed engine's propeller will feather. There is a 2.15 second delay to allow the Pilot to make an aborted takeoff with the availability of reverse thrust before the propeller is feathered and the engine is shut down.
In the air - The failed engine's propeller immediately feathers and there is no UPTRIM.
If there is a problem with the Configuration, a Level 3 Master Warning will occur with a Continuous Repetative Chime and a CONFIG illumination on the Crew Alerting Panel.
I hope this helps,
BW
ATR 72/42 Type