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Forum: Rotorheads

2nd Sep 2019, 19:52

Replies: 27

Allison/RR 250-C20 Engine Coking

Views: 11,607

Posted By Rotorhead84

Is there a specific written procedure from the...

Is there a specific written procedure from the manufacturer about switching oils?

Forum: Rotorheads

12th Aug 2019, 18:45

Replies: 27

Allison/RR 250-C20 Engine Coking

Views: 11,607

Posted By Rotorhead84

None of them do, no. How did...

None of them do, no.

How did you go about figuring this out? Our fuel is delivered by the same company as always, but could have switched where they got it from.

I...

Forum: Rotorheads

5th Aug 2019, 02:46

Replies: 27

Allison/RR 250-C20 Engine Coking

Views: 11,607

Posted By Rotorhead84

Thanks for the tip! Will give it a try. And...

Thanks for the tip! Will give it a try.

And yes, we spin blades backwards religiously also. Once right after blades stop turning, and then once 5-10 minutes later after clean up of the aircraft...

Forum: Rotorheads

4th Aug 2019, 22:40

Replies: 27

Allison/RR 250-C20 Engine Coking

Views: 11,607

Posted By Rotorhead84

Allison/RR 250-C20 Engine Coking

I have 3 OH58A+ helicopters with the C20 in them. Have had them different amounts of time. Our oldest ship we've had for about 15 years. Our newest ship we've had about 4 or 5 years. Starting to...

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