Rv-10 pilot reported engine failure during break-in flight.

Attributes
ACN	1641074
Time
Date	201904
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	RV-10
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Component
Aircraft Component	Cylinder Head
Person 1
Function	Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 20 Flight Crew Total 4000 Flight Crew Type 1400
Person 2
Function	Pilot Flying Single Pilot
Experience	Flight Crew Last 90 Days 20 Flight Crew Total 4000 Flight Crew Type 1400
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

1st flight new factory lycoming io-540-d4a5 in RV10. Informed tower of 1st engine run & requested staying in 'D' airspace at 3;500 ft. They approved for delta space on north side of [the airspace]. After 2 spins around circuit engine shook; smoke & oil came from cowling on pilot side. Informed tower engine quit & they cleared xxl for landing. I shut down engine and electrical to prevent possible fire & made emergency landing dead stick. Upon towing back to hangar found large hole in case above #6 cylinder destroying engine.

Original NASA ASRS Text

Title: RV-10 pilot reported engine failure during break-in flight.

Narrative: 1st flight new factory Lycoming IO-540-D4A5 in RV10. Informed tower of 1st engine run & requested staying in 'D' airspace at 3;500 ft. They approved for Delta space on north side of [the airspace]. After 2 spins around circuit engine shook; smoke & oil came from cowling on pilot side. Informed tower engine quit & they cleared XXL for landing. I shut down engine and electrical to prevent possible fire & made emergency landing dead stick. Upon towing back to hangar found large hole in case above #6 cylinder destroying engine.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.