Holding - Best FL for Jets
I have two questions...
Q1. What are optimum levels for holding Jets like B737?
Q2. Suppose one is approaching destination say at FL 400 and ATC tells expect delays
Now we have 2 possibilities
1. Go with minimum clean at higher FL and cruise longer and delay descent since Jet Engines are more effective at higher FL.
2. Start descent early with min clean and hold at lower altitude
Which is more cost effective?
Thanks