February 6, 20179 yr I was on a quick hop across the ditch from YSSY to NZAA in a Qantas 747-400ER. I had set my weather with a tailwind of 100 knots and an outside temp of -50 at 37,000FT. About halfway in to the flight (1.5 hours) I received the FUEL TEMP LOW warning. I reduced altitude to 33,000FT where the temp was a bit warmer and the fuel temp continued to drop. I then descended to 27,000 where the outside temp was -34 and the fuel temp still continued to drop. It got down to -49c before I quit. Is this normal to drop that fast in that region? I fly this route on the 737 and never see this. I did a Sydney to Melbourne flight on a RR powered Qantas 747 and the temp didn't drop like this. Could it be a bug in the ER model? Brett Williamson
February 6, 20179 yr When you lost altitude, did you lose speed as well? You want to increase speed to bring more friction to the wings - will have to fly the ER version before I make an educated guess. Have you checked the manuals for the message and follow through with the appropriate actions? Regards, Brandon Brandon Binder Drei Tage war der Vater krank - jetzt trinkt er wieder - Gott sei dank!
February 6, 20179 yr Author I lost a small amount of ground speed - 525 to 510. I followed the actions of reducing altitude to 27,000FT but no course deviation as I had the weather setting as global and it would be a waste of time. TAT was around -67c. On another flight from Perth to Sydney a couple of nights before on the RR powered Qantas bird it was -30c. It could have been P3D causing it, I will try the flight again when I get a chance, this time without setting the weather manually. I followed the actions of reducing altitude to 27,000 Brett Williamson
February 6, 20179 yr Yeah, I am suspecting the weather engine. I'd take screen shots and share with my friends if I ever saw a TAT of -67C, I cannot imagine what the SAT was. Dan Downs KCRP
February 6, 20179 yr On my way from syd to yvr in the Qantas ER. 10hrs real flight time have elapsed. Currently at FL370. TAT -14C (7F) SAT is -46C (-50.8F), fuel temp is -11C (-12F) - well above jeta1 freeze point. I'm willing to bet your left one that the weather engine was mis configured. Mine is on auto real world weather. Brian Nellis
February 7, 20179 yr Author Gents, thanks for the answers. I think my left one is safe in this instance and bet it was the weather engine after reading your responses. I can't say I've ever had good dealings with the P3D custom weather. I found the FSX version more reliable. Auto weather from now on. Brett Williamson
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