Narrative:

The aircraft had a new hopper fuel transfer pump installed. I switched from wing tanks to hopper and the engine failed. Initially I had 52 gallons usable fuel in the wings and 40 gallons in the hopper. I had filed a VFR flight plan with the FSS and received a complete weather briefing. I was also talking to approach receiving VFR flight following. I was at 3;000 ft when the engine failed and I landed on a highway at the 21 mile marker. There was no injury to me or the airplane. Engine failed due to contaminated fuel. When I did the preflight of the aircraft prior to takeoff; I noticed that the fuel had a slight yellowish tint to it; but attributed this to the new hopper fuel transfer pump and fuel lines. A&P mechanics drained the hopper and by-passed all plumbing associated with the hopper fuel lines and transfer pump. Engine was then run-up; checked good; and with the approval of the FAA the highway was blocked and I flew the airplane to a nearby airport.

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Original NASA ASRS Text

Title: A C188 with a new hopper tank fuel pump made a safe off airport landing on a highway after the engine quit because of contaminated hopper tank fuel. After maintenance the aircraft was flown to a nearby airport.

Narrative: The aircraft had a new hopper fuel transfer pump installed. I switched from wing tanks to hopper and the engine failed. Initially I had 52 gallons usable fuel in the wings and 40 gallons in the hopper. I had filed a VFR flight plan with the FSS and received a complete weather briefing. I was also talking to Approach receiving VFR flight following. I was at 3;000 FT when the engine failed and I landed on a highway at the 21 mile marker. There was no injury to me or the airplane. Engine failed due to contaminated fuel. When I did the preflight of the aircraft prior to takeoff; I noticed that the fuel had a slight yellowish tint to it; but attributed this to the new hopper fuel transfer pump and fuel lines. A&P Mechanics drained the hopper and by-passed all plumbing associated with the hopper fuel lines and transfer pump. Engine was then run-up; checked good; and with the approval of the FAA the highway was blocked and I flew the airplane to a nearby airport.

Data retrieved from NASA's ASRS site as of April 2012 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.