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A SumpThis General Aviation Timeline

 

 


 

1975-1978
1979-1982
1983-1986
1992-1996
1997
1998
1999
2000
2001-2003
2004

 

 

 

Year

 

 

 


Aviation Safety and Management Consultants, ASMC, was a business owned and operated by Norman L. Horton, Jerry L. Wells collaborating, in Central Point, Oregon. Mr. Horton has retired and the company is no longer in operation, but during
the company's lifetime, consultants Horton and

Wells spent many years investigating general aviation aircraft accidents. In the course of their work, they discovered problems related to fuel contamination and positive detection of it.
Mr. Wells is still actively investigating aircraft accidents from his office and shop in Auburn, Washington and can be reached at (253) 735-3769.

2004

In June of 2004, Horton and Wells provided documentation of their findings to SumpThis as well as granted permission to SumpThis to distribute their information, which spans the years 1985 through 1996 and reveals ASMC's effort to work with the FAA, the NTSB and general aviation aircraft manufacturers.

ASMC's documentation is available here on the SumpThis web-site at the following link

ASMC's Quest for Positive Detection of Fuel Contamination

 

 

 

 

 

 

SumpThis continues to  for answers.

 

 

FAA Certified
Sump
Sump Drain
Rock Wings
Dip Tail
Fuel Sample

 






Pilot Error
Carbuerator Ice
Undetermined

 


NTSB says the engine runs fine in its post crash engine test stand with uncontaminated fuel.

Will it run if your engine test stand uses contaminated fuel


 

 

 

 

 

Summary of undetermined engine failures for the years 1964 through 2002 as of October 31, 2003.

Articles

 

 

Year

Undetermined Engine Failures

 

 

Drainage Flaws Suspected in Cessna Fuel Tanks By James Wynbrandt, (2/21/2001. Flyer Media, Inc.)

1964

90

 

 

1965

155

 

Scovill answers the question, "Where Did the Water Contamination Come From"?

1966

130

 

 

1967

199

 

Detection Unknown, Testing Cessna's Prescribed Preflight Procedures.

1968

207

 

 

1969

227

 

Cessna's Bladder Tank from the Years 1978 to 1986

1970

264

 

 

1971

228

 

 

1972

167

 

 

1973

197

 

 

1974

238

 

 

1975

223

 

 

1976

212

 

 

1977

198

 

 

1978

233

 

 

1979

234

 

 

1980

238

 

 

1981

268

 

 

1982

199

 

 

1983

200

 

 

1984

166

 

 

1985

137

 

 

1986

165

 

 

1987

135

 

 

1988

42

 

 

1989

87

 

 

1990

113

 

 

1991

120

 

 

1992

110

 

 

1993

147

 

 

1994

144

 

 

1995

144

 

 

1996

125

 

 

1997

134

 

 

1998

118

 

 

1999

112

 

 

2000

106

 

 

2001

123

2002

83

Yearly Average

Sum

6,418

164.6

 

 

 

 

 

 

 

 

 

 

 

1975-1978
1979-1982
1983-1986
1992-1996
1997
1998
1999
2000
2001-2003
2004

 

 

 

 

 

 

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