<< >> NASA ASRS Report 392276, September 1997

A C172 on a training flight declared an emergency and landed off field due to complete loss of engine oil caused by the oil drain plug improperly torqued and safetied.

Attributes
ACN	392276
Time
Date	199709
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : maz
Operator	other
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	other : other
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	government : military
Qualification	other other : other
ASRS Report	392276
Person 2
Affiliation	Other
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other flight crewa other other : unspecified cockpit
Resolutory Action	flight crew : declared emergency none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Aircraft was on a routine training mission when a loss of oil pressure was detected. The aircraft made an off airport landing with no damage to the aircraft or to the passenger. The loss of oil was apparently caused by an oil drain plug that was not safety wired properly and vibrated out. Callback conversation with reporter revealed the following information: the reporter stated the cause of the oil loss was the drain plug screwed in finger tight and incorrect safety procedure used on the plug. The reporter said the engine came from the new engine manufacturer in this condition and was not observed when the engine was installed. The reporter stated the engine was installed by the reporter.

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Original NASA ASRS Text

Title: A C172 ON A TRAINING FLT DECLARED AN EMER AND LANDED OFF FIELD DUE TO COMPLETE LOSS OF ENG OIL CAUSED BY THE OIL DRAIN PLUG IMPROPERLY TORQUED AND SAFETIED.

Narrative: ACFT WAS ON A ROUTINE TRAINING MISSION WHEN A LOSS OF OIL PRESSURE WAS DETECTED. THE ACFT MADE AN OFF ARPT LNDG WITH NO DAMAGE TO THE ACFT OR TO THE PAX. THE LOSS OF OIL WAS APPARENTLY CAUSED BY AN OIL DRAIN PLUG THAT WAS NOT SAFETY WIRED PROPERLY AND VIBRATED OUT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE CAUSE OF THE OIL LOSS WAS THE DRAIN PLUG SCREWED IN FINGER TIGHT AND INCORRECT SAFETY PROC USED ON THE PLUG. THE RPTR SAID THE ENG CAME FROM THE NEW ENG MANUFACTURER IN THIS CONDITION AND WAS NOT OBSERVED WHEN THE ENG WAS INSTALLED. THE RPTR STATED THE ENG WAS INSTALLED BY THE RPTR.

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.