Pattern Is Full - with regard to your statement that an engine will not run with the fan braked,I have seen a JT9 in a 747 running at idle with the fan stopped - it was a recently installed engine and the fan tips had dug into the attrition liner.
I was not on the headset and thought the engine had not been started but then noticed the smoke from the breather was flowing forward into the outlet of the fan duct. On speaking to the engineer in the cockpit he remarked that his N1 indication had failed - the EGT was a little higher than normal. We had an extremely difficult job freeing the fan then we ran it for a while to wear the fan into the attrition liner.