Just so that I can understand it (and potentially put it in my cheklist), may I please ask what are the rules of thumb for the non-turbo Arrow III as far as mixture leaning is concerned during the various phases of a flight?
- Assuming we take off at sea level, we start climbing with full mixture
- Start leaning after 3000’ AGL
- During climb I assume we care about best power operation, so we should be leaning to remain at 100oF below peak EGT
- During cruising it’s up the pilot to decide whether to use best power (100oF below peak EGT) or best economy (peak EGT)
- (unsure about descending)
Does this make sense or am I too confused?
Up until now I was simply starting to lean at altitudes above 3000’ and after that I’d always strive to remain at peak EGT (just as @EnoughBard39362 says) no matter if I was climbing, cruising or descending (which would usually be at around mixture 40%, where the mixture lock activates and the lever can’t be pushed farther back). I’d switch back to full mixture only at the final stage of approach, e.g. at around 1000’ AGL or so.
Apparently there are more options? Also does the turbo version differ to the above?