Unicom—September 2024

Aviation Safety

Thursday, August 29, 2024 at 04:14 AM ET

Verified

Edited By: Omar Filipovic

Key Takeaways:

The article advocates for Lean of Peak (LOP) EGT for engine cooling, explaining how LOP cools with air after peak EGT, provided the engine's mixture distribution is balanced for smooth operation.
It addresses the semantic debate between using "crash" versus "accident" for aviation events, noting historical efforts to shift blame and the editor's adherence to the NTSB's specific definition of "aircraft accident."

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Hover Mode Cooling

Having long been a lean of peak (LOP) exhaust gas temperature (EGT) advocate (25 years), I think some further explanation to Andrew Strauss and some of your other readers about that form of mixture control might be in order (Unicom, August 2024).

First of all, not everyone has mixture distribution that is well balanced enough between all their engine’s cylinders to run lean of peak with smooth engine operation. If they do, then it should definitely help.