Agusta AW139

[manriman]

Thanks, very clear now. I was checking with a couple of friends who fly in different big companies and although they know this procedure is in the RFM, their company's checklist don't consider it. Not sure why not.

[rancid]

What is the allowable torque split in aw139?

[noooby]

Originally Posted by rancid

What is the allowable torque split in aw139?

If you're in Tq Match, it should be within 1 or 2 % if not perfectly even. That is at 100 or 102 NR. In Idle it doesn't matter.

If you're in Tq Match and they are not matching, then there is an issue somewhere.

[manriman]

Originally Posted by rancid

What is the allowable torque split in aw139?

Just to add: load share is performed by the EECs both at Idle and Flight. Couldn't find what's the maximum split but maintenance told me that one of the EECs failures is due to the load share function lost. If it hapens, before start you will have either maintenace white or EEC1(2) fail. Engines runing possibly EEC fail. Hope that helps.

[noooby]

Originally Posted by rancid

What is the allowable torque split in aw139?

Maintenance Manual Ch 77-40 has your answer.

[Sir Korsky]

Originally Posted by noooby

If you're in Tq Match, it should be within 1 or 2 % if not perfectly even. That is at 100 or 102 NR. In Idle it doesn't matter.

If you're in Tq Match and they are not matching, then there is an issue somewhere.

I concur with this. I watched the TQ match recently and it always seems to stay within 1% through all power settings.

[mfnaveed]

Originally Posted by manriman

Just to add: load share is performed by the EECs both at Idle and Flight. Couldn't find what's the maximum split but maintenance told me that one of the EECs failures is due to the load share function lost. If it hapens, before start you will have either maintenace white or EEC1(2) fail. Engines runing possibly EEC fail. Hope that helps.

it happens with me once that the Matching Symbology was not there for Tq n ITT.
Maintenance people reset both EEC and problem was resolved.

[Zeeshan2061]

Originally Posted by rancid

What is the allowable torque split in aw139?

Chapter 72 Engine Maintenance Manual .... Engine Fault Isolation... Table NCFUR 2 .... Fig 127
There is no limit written but remedial action is given. In my aircraft it was solved at 1st step that is cleaning EEC plugs