|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : tx06|
|Altitude||msl bound lower : 0|
msl bound upper : 9500
|Operator||general aviation : personal|
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Fixed Gear|
|Flight Phase||cruise other|
|Function||flight crew : single pilot|
|Qualification||pilot : private|
|Experience||flight time last 90 days : 27|
flight time total : 254
flight time type : 17
|Anomaly||aircraft equipment problem : critical|
non adherence : far
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||none taken : anomaly accepted|
|Consequence||faa : investigated|
|Air Traffic Incident||other|
Cruising at 9500' my engine suffered severe internal damage. At the present time it is believed a piston pin broke. A subsequent investigation showed two ad's both 50 hour recurring had not been signed off 71-09-07 and 76-07-12. I purchased the aircraft approximately two weeks previous to this and had a pre-purchase inspection done on it. The mechanic overlooked these two ad's. This was in no way related to the engine damage sustained but in order to become a more safety conscious pilot I should check all ad's myself. Callback conversation with reporter revealed the following: cause of the engine failure was a valve failure which failed and knocked a piston and consequently rest of engine. Forced landing was in a plowed field and pilot elected to land wheels up to prevent flipping over. As a result engine mounts were stretched and other damage was such that repair cost was so much plane was totaled. Ad's that had not been signed off had nothing to do with engine failure and now think were done but just not signed off. FAA investigated incident but no follow up action being taken.
Original NASA ASRS Text
Title: GA SMA EXPERIENCED COMPLETE ENGINE FAILURE AND MADE EMERGENCY LNDG WHEELS UP IN PLOWED FIELD.
Narrative: CRUISING AT 9500' MY ENGINE SUFFERED SEVERE INTERNAL DAMAGE. AT THE PRESENT TIME IT IS BELIEVED A PISTON PIN BROKE. A SUBSEQUENT INVESTIGATION SHOWED TWO AD'S BOTH 50 HOUR RECURRING HAD NOT BEEN SIGNED OFF 71-09-07 AND 76-07-12. I PURCHASED THE ACFT APPROX TWO WEEKS PREVIOUS TO THIS AND HAD A PRE-PURCHASE INSPECTION DONE ON IT. THE MECHANIC OVERLOOKED THESE TWO AD'S. THIS WAS IN NO WAY RELATED TO THE ENGINE DAMAGE SUSTAINED BUT IN ORDER TO BECOME A MORE SAFETY CONSCIOUS PLT I SHOULD CHECK ALL AD'S MYSELF. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: CAUSE OF THE ENGINE FAILURE WAS A VALVE FAILURE WHICH FAILED AND KNOCKED A PISTON AND CONSEQUENTLY REST OF ENGINE. FORCED LNDG WAS IN A PLOWED FIELD AND PLT ELECTED TO LAND WHEELS UP TO PREVENT FLIPPING OVER. AS A RESULT ENGINE MOUNTS WERE STRETCHED AND OTHER DAMAGE WAS SUCH THAT REPAIR COST WAS SO MUCH PLANE WAS TOTALED. AD'S THAT HAD NOT BEEN SIGNED OFF HAD NOTHING TO DO WITH ENGINE FAILURE AND NOW THINK WERE DONE BUT JUST NOT SIGNED OFF. FAA INVESTIGATED INCIDENT BUT NO FOLLOW UP ACTION BEING TAKEN.
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.