A C172 pilot experiences a loss of engine power, making an emergency landing in a field.

Attributes
ACN	527596
Time
Date	200110
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : q99.airport
State Reference	CA
Altitude	msl single value : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 60 flight time total : 91.9 flight time type : 91.9
ASRS Report	527596
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition
Consequence	faa : investigated other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Brief narrative not used. Callback conversation with reporter revealed the following information: the reporter stated that during his flight at 3000 ft, the engine made a loud bang then started vibrating. His intent was to land at KQ99. However, he was too high for the runway, so elected to land in a field just south of KQ99. Subsequent to the emergency landing, it was discovered that the engine had thrown a rocker arm. Further inspection of the engine is to follow. No injuries or damage were incurred.

Original NASA ASRS Text

Title: A C172 PLT EXPERIENCES A LOSS OF ENG PWR, MAKING AN EMER LNDG IN A FIELD.

Narrative: BRIEF NARRATIVE NOT USED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT DURING HIS FLT AT 3000 FT, THE ENG MADE A LOUD BANG THEN STARTED VIBRATING. HIS INTENT WAS TO LAND AT KQ99. HOWEVER, HE WAS TOO HIGH FOR THE RWY, SO ELECTED TO LAND IN A FIELD JUST S OF KQ99. SUBSEQUENT TO THE EMER LNDG, IT WAS DISCOVERED THAT THE ENG HAD THROWN A ROCKER ARM. FURTHER INSPECTION OF THE ENG IS TO FOLLOW. NO INJURIES OR DAMAGE WERE INCURRED.

Data retrieved from NASA's ASRS site as of July 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.