Makila 2A1 Negative Torque Margin
Subject engine Makila 2A1
Could someone tell me why a Makila 2A1 as fitted to an H225 would show a negative torque margin when the TOT margin looks good.
I have asked the technicians to explain this to me but all I get is shrugs!!!
The graph on their M'ARMS shows the TOT positive with a margin of 25 to 35 degrees C
The torque margin on the other hand shows values between +2 and -2 with no obvious trend but a wide scatter of points.
I know Airbus monitor these figures, but should I be worried??
This engine is installed as number one, number two has positive for both TQ and TOT..... why the difference.
Can anyone help
Cheers
DTD