I’ve tried full throttle in free flight and I don’t hit the same engine malfunctions (with realism settings). I think this is specific to the career mode and not being able to complete this training missing from LA means you’re not able to get any other extended attack missions. Seems like a bug in the mission.
You can complete it. If you can’t take off just crash into something and it spawns you in the air. Not the best but atleast you can finish the mission to unclock others.
Do you have the same issue if you follow the OP’s steps to reproduce it?
• Same problem. I’ve even tried flying the plane in free flight and trying to keep everything under red line, I still get an engine damage issue. This doesn’t happen to me with any other aircraft.
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same for me. engine malfunction until they shut down and I crash even with 70-80% torque. as soon as I filled up my water tanks I cannot take off anymore even with full throttle and full flaps. unmanageable that plane
Ok I finally got it, took me a lot of experimenting, so I want to share my approach here. No luck completing the mission though, CTD on short final 
what a joy this simulator is…
Engine malfunction: Under no circumstances allow the engine to overheat - even a short moment will damage it, then it overheats even faster and you are done. Torque in yellow is fine for a short time - just watch the temperature, keeping it there will overheat the engine. NP suffers from a bug - never put the throttle into flight idle - on the ground this will put NP in the lower red range, in flight this will make the NP skyrocket out of scale. I have not tested if this specifically leads to engine malfunction, but I decided to avoid it to be sure.
For scooping: Do not get too slow, touch down very gently, stay around 80 knots and try to avoid bouncing. Increase the throttle as the plane fills up. Input full throttle as the plane fills up completely, lift off gently, retract flaps, put throttle back to green torque range before overheating the engine. Also take wind into account. On the inital mission I got 287 at 11, so I approached the lake from the east of the dam, going into the west arm from there. A bit scary to climb in the narrowing valley at full load, but it works. If anything goes wrong, you can dump the load and scoop again.
Relevant bugs:
- CTD on short final (had this 2 out of 3 times I tried to land on land).
- Never put throttle to flight idle to avoid red NP area
- The stick shaker starts well in the green area, not sure it should be like this.
- Copilot states it is okay to go back to the fire if tanks are not full, but mission does not continue.
Thank you for the bug report.
We have created an internal ticket to see if our team already has this logged, and if not they will attempt to reproduce the issue and create a new bug report. This item is now marked as feedback-logged. If there is an existing bug report or one is created, we will move this thread to bug-logged.
Don’t redline the engine.