<< >> NASA ASRS Report 586634, July 2003

C170A pilot made an emergency landing at an army air force base with a rough running engine, because the fuel was contaminated with water.

Attributes
ACN	586634
Time
Date	200307
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sli.airport
State Reference	CA
Altitude	agl single value : 1000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sli.tower
Operator	general aviation : personal
Make Model Name	Cessna 170
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 10000 flight time type : 300
ASRS Report	586634
Person 2
Affiliation	government : military
Function	controller : local
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed in emergency condition none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Engine problems began approximately 5 mi south of los alamitos, which was about 10 mins into the flight. After landing it was discovered that the fuel was contaminated with water. Although both wing tanks had been drained and inspected prior to flight, the main sump under the cowling had not been sufficiently drained enough to eliminate all the water.

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Original NASA ASRS Text

Title: C170A PLT MADE AN EMER LNDG AT AN ARMY AIR FORCE BASE WITH A ROUGH RUNNING ENG, BECAUSE THE FUEL WAS CONTAMINATED WITH WATER.

Narrative: ENG PROBS BEGAN APPROX 5 MI S OF LOS ALAMITOS, WHICH WAS ABOUT 10 MINS INTO THE FLT. AFTER LNDG IT WAS DISCOVERED THAT THE FUEL WAS CONTAMINATED WITH WATER. ALTHOUGH BOTH WING TANKS HAD BEEN DRAINED AND INSPECTED PRIOR TO FLT, THE MAIN SUMP UNDER THE COWLING HAD NOT BEEN SUFFICIENTLY DRAINED ENOUGH TO ELIMINATE ALL THE WATER.

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.