A mechanic reported the failure of an engine in a single engine small aircraft for which he did the ...

Attributes
ACN	220860
Time
Date	199209
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : snl
State Reference	OK
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : nkt
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other descent : approach landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	other personnel other personnel other
Qualification	other other : other
ASRS Report	220860
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

During a night flight, engine seized. It is felt at this time an oil pump failure occurred. There are 2 ad's on the oil pump of an engine, either or both to be accomplished during overhaul. Engine was 500 hours from tbo. I have done maintenance and inspections for the previous 2 yrs, but have not overhauled the engine. I feel engine failure was due to internal failure of engine and none of the maintenance or inspections which I performed would require service to the engine that would have caused this problem.

Original NASA ASRS Text

Title: A MECH RPTED THE FAILURE OF AN ENG IN A SINGLE ENG SMA FOR WHICH HE DID THE MAINT.

Narrative: DURING A NIGHT FLT, ENG SEIZED. IT IS FELT AT THIS TIME AN OIL PUMP FAILURE OCCURRED. THERE ARE 2 AD'S ON THE OIL PUMP OF AN ENG, EITHER OR BOTH TO BE ACCOMPLISHED DURING OVERHAUL. ENG WAS 500 HRS FROM TBO. I HAVE DONE MAINT AND INSPECTIONS FOR THE PREVIOUS 2 YRS, BUT HAVE NOT OVERHAULED THE ENG. I FEEL ENG FAILURE WAS DUE TO INTERNAL FAILURE OF ENG AND NONE OF THE MAINT OR INSPECTIONS WHICH I PERFORMED WOULD REQUIRE SVC TO THE ENG THAT WOULD HAVE CAUSED THIS PROBLEM.

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.

A mechanic reported the failure of an engine in a single engine small aircraft for which he did the maintenance.