Fan Blade Tips bended forward
Hi, guys.
Maybe someone could shedsome light on it.
I am an aircraft and powerplant mechanic but working as a Pilot since 15 years and so far a bit rusty on my mechanic skills.
We in our company operating Bombardier Challengers 604 and 605 with the CF34-3B Engines.
We just had it a 3rd time in the last 7 years that on take off in icing conditions the fan blades tips bended forward on one or both engines. All operation has been done according the limitations and the AFM. So Anti Ice has been selected on for take off.
Normaly everything should have been ok. So why are the Blades get bended forward? This time we had to change 10 Blades.
Plus it is not that it happend to 3 or 4 blades in a row. There is one than 2 or 3 are ok and then its another one affected.
Thank you very much for your input.
Bombardier is not very helpful with this as it looks like they dont want to give out any numbers how often this happens to other operators.
Peter