It's right off the subject I know but can anyone reading this who flies B737-200's with JT8D-15 or -17 tell me what is the N1 idle speed (closed throttle) at 35,000 ft at top of descent. I was in a simulator doing approach to stalls at high altitude (35,000 ft) and was surprised to note stable idle of 54% N1. I thought it was a lot lower from memory.
Thrust response at 35,000 ft to fast throttle opening was remarkably quick in this particular simulator (3 seconds from idle to 98%) and I doubted the fidelity. The FCTM warns of slow thrust response and certainly in CM56 engines in the 737 Classic sims I have operated, the thrust response from idle at high altitude is is very very slow as advertised. But there again the JT8D is a different design.
OK - back to config warnings!