Some further reading on the subject of TL from the training manual:
Engine limitations
Engines power can be limited in order to protect the main
gearbox when in double engine operation.
This function is achieved by pressing the TQ LIM pushbutton
on the collective grip; when pressed the EECs controls
the total engines torque in order to not exceed the
maximum take-off power rating while has no effect in single
engine operation.
Torque is the only parameter involved in the limitation, Ng
and ITT could reach the single engine limits even in double
engine operation if allowed by the environmental conditions.
Torque limitation is not available in MANUAL mode.
It is pilot responsibility to select the engines torque limitation,
the default mode is OFF
Although I have to admit I can't really think of any practical uses for this. Like has been stated before, I would rather save the airframe if I ever found myself in the position where I needed that power.
For the guys that do use the limiter. What do you guys use it for out of interest? What kind of operations are you involved in? Do you feel you need it a lot? I'm not saying its wrong, I'm just interested in this as there may be something I'm overlooking.
Last edited by platinumpure; 23rd Jun 2009 at 21:02.