You Guessed It! More Ponderings: How come you press harder on a remote-control when you know the battery is dead? Have you ever imagined a world with no hypothetical situations? You know how most packages say "Open here".What is the protocol if the package says, "Open somewhere else"? Since Americans throw rice at weddings do orientals throw hamburgers? Why are they called buildings, when they're already finished? Shouldn't they be called builts? Why are they called apartments, when they're all stuck together? Why do people without out a watch look at their wrist when you ask them what time it is? Why do you ask someone without a watch what time it is? Who is General failure and why is he reading my disk ? The light went out, but where to ? Why do banks charge you a "non-sufficient funds fee" on money they already know you don't have? Why is it you have a "pair" of pants and only one bra? How come when I call Information they can't tell me where my keys are? Why do people go to Burger King and Order a Double Whopper with a Large French Fry and insist on getting a Diet Coke? Does the reverse side also have a reverse side? Why is the alphabet in that order? If the universe is everything, and scientists say that the universe is expanding, what is it expanding into? If you got into a taxi and he started driving backwards, would the taxi driver end up owing you money?

What does your flight manual say about operating the oil cooler augmentation systems in LSGI?

My assumption then is that the #1 engine is the only one supplying bleed air for aircraft systems. Assuming everything with the engines check out to be within normal limitations (rigging, air leaks, efficiency, propeller blade angle, etc...), I'd recommend you adjust the Fuel Control LSGI RPM towards the upper limit. Other things you can do if that doesn't work is to re-seal the 5th and 10th bleed air valves and blow out the CIP line from the fuel control fitting into the air inlet housing. Do not adjust the Minimum flow adjustment as a misadjustment there should only cause a flameout when transitioning from HSGI to LSGI. If none of this works, (again assuming all rigging and other checks are correct), the most likely culprit is the fuel control. This is unlikely the cause due to multiple fuel controls involved, but it's not unheard of for multiple components to share the same defect if they were overhauled at the same facility around the same timeframe. Could also just be bad luck. I'm still not sold on taxiing with one single engine in HSGI, especially with a tailwind. I'd recommend only 2 at a time during taxi. If oil temps are difficult to keep under control in LSGI during normal taxi operations and minimal tailwind, you may need to look at that issue separately. If cleaning the coolers with fresh water doesn't fix that issue, either straighten the radiator fins or replace the coolers. Oil cooler augmentation is a great addition if you can afford the modification.

Thanks for your input. No. 1 is on NSGI, the rest at LSGI. Engine efficiency is also quite good. Engines 3 and 4 were running at LSGI for like 5mins before it decayed, probably the only movement they made was moving the throttles slightly forward due to the tailwind factor during taxi that might cause oil temps to rise.