Questions about mixture leaning

I found out about the RED FIN elsewhere as a variation of the RED BOX, the idea that operation within the box will be harmful to the engine.
If you consider all of the slopping leaning practices that students do in flight school aircraft (a lot of which routinely operate within the red box), yet still make TBO and beyond.
 
If you consider all of the slopping leaning practices that students do in flight school aircraft (a lot of which routinely operate within the red box), yet still make TBO and beyond.

Way beyond, the local flight school once told me their average TBO time is somewhere between 3200- 3800 hrs. And those planes gets a used way more than any owner would ever do. Think the only thing that matters is how much you let the engine sit. These things are built to stand abuse.
 
Flight school airplanes... flying every day is the best way to keep an engine happy. It more than makes up for all of the operational practices which are considered "hard" on an engine... though just imagine how long a gently flown engine could make it if it was flown every day.

Personal aircraft which fly 100-150 hours per year need their engines to be managed more carefully to approach this sort of flight hour longevity.
 
That’s why on some of our checklists it says “as req’d.” For example engine anti ice. Under certain conditions it will be on and other times it will be off. Some items are not always required.

G7VZVvB.jpg
Hey do you have the rest of this MD88 checklist? If so can you post it?
 
Back
Top