Originally Posted by
Old Fella
For those of you bagging Mariner, he is a pilot, not a LAME and I suspect he was requested to run engines either individually, or individually supply the pneumatic system, to determine which engine his aircraft may have been getting contaminated bleed air from.
That was indeed the case Old Fella 😎
And thanks Spannersatcx, that was helpfull. 👍
Looking back, we stayed well within those parameters, even though we had PW4000 engines.
And we did find the culprit, so the mission was succesfull.