12. The round engine may blow an oil seal ring, burst into flame, splutter for no apparent reason or just quit. This results in heightened pilot awareness at all times.
16. Round engines have a tendency to make strange noises, especially at night over water.
OH MY....Yessss!
Think Sikorsky CH-34.....and something akin to "BRRRRRRRRRRRRR....BRUPPPH......Silence...BRUPPHPOP...POP... POP....Silence....BRRRRRRRRRRR!"
Nothing beats leaning the mixture on the the ol' girl by looking at the exhaust stack in dim light. Such a beautiful blue with a hint of Hades in it!