Register

Detonation Grounds a Mooney

Mitchell Gossman is an ophthalmologist and has been flying for 30-plus years, 11 in his Mooney. Joel Kimmel
Gemini Sparkle

Key Takeaways:

  • A pilot encountered severe engine roughness and a high cylinder temperature (Cylinder #3) mid-flight, leading to a Mayday declaration and immediate diversion to the nearest airport.
  • The engine smoothed out after the mixture was pushed full rich, but a precautionary landing was still made, revealing a cracked spark plug insulator and suspected partial fuel injector obstruction as the root cause.
  • Key takeaways include the importance of immediate action (enriching mixture), always making precautionary landings after an incident, and leveraging tools like engine monitors and moving-map displays for safety.
See a mistake? Contact us.

I’ve been flying for 30 years and never experienced a hiccup from an airplane engine while airborne. That changed a few minutes into a recent flight. This story can’t rival a sudden engine stoppage and forced landing—it’s a story of an engine that seemed on its way to quitting—but I hope it provides some useful lessons.

Ready to Sell Your Aircraft?

List your airplane on AircraftForSale.com and reach qualified buyers.

List Your Aircraft
AircraftForSale Logo | FLYING Logo
Pilot in aircraft
Sign-up for newsletters & special offers!

Get the latest stories & special offers delivered directly to your inbox.

SUBSCRIBE