Light single engine aircraft training in IMC has engine failure, successful forced landing.

Attributes
ACN	112734
Time
Date	198906
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ekq
State Reference	KY
Altitude	agl bound lower : 0 agl bound upper : 6000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Route In Use	enroute airway : cak
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 90 flight time total : 4200 flight time type : 500
ASRS Report	112734
Person 2
Affiliation	Other
Function	observation : passenger
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Aircraft was on IFR training flight from akron/canton regional airport to lima/allen county, oh. We were in IMC in cruise 6000 MSL. Aircraft developed an unusual vibration and lost power. We began descending and requested a heading to the nearest airport. Leaving 3000', engine failed totally. We continued our descent in VMC, selected a wheat field and landed. No further damage, no injuries. Investigation showed massive internal failure of crankshaft, connecting rods, cylinder, and push rods. Descent and landing was accomplished without amended clearance or emergency declaration.

Original NASA ASRS Text

Title: LIGHT SINGLE ENGINE ACFT TRAINING IN IMC HAS ENGINE FAILURE, SUCCESSFUL FORCED LNDG.

Narrative: ACFT WAS ON IFR TRAINING FLT FROM AKRON/CANTON REGIONAL ARPT TO LIMA/ALLEN COUNTY, OH. WE WERE IN IMC IN CRUISE 6000 MSL. ACFT DEVELOPED AN UNUSUAL VIBRATION AND LOST POWER. WE BEGAN DESCENDING AND REQUESTED A HDG TO THE NEAREST ARPT. LEAVING 3000', ENGINE FAILED TOTALLY. WE CONTINUED OUR DSCNT IN VMC, SELECTED A WHEAT FIELD AND LANDED. NO FURTHER DAMAGE, NO INJURIES. INVESTIGATION SHOWED MASSIVE INTERNAL FAILURE OF CRANKSHAFT, CONNECTING RODS, CYLINDER, AND PUSH RODS. DSCNT AND LNDG WAS ACCOMPLISHED WITHOUT AMENDED CLRNC OR EMER DECLARATION.

Data retrieved from NASA's ASRS site as of August 2007 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.