- Date
- August 11, 1996, 10:00 local (15:00 UTC)
- Place
- N. Sioux City, SD
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N4053GRamesbotham CH701
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 23, 1997
- Report
- Approved by Office Director
- FAA report
- 19960811022179A
- Case key
- 10351
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
the pilot's delay in switching fuel tanks which resulted in fuel starvation. Factors associated with the accident were the low altitude at which the loss of engine power occurred and the powerline which was contacted.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The pilot reported that he flew the flight using the left fuel tank. When the fuel level in the left tank got low, he attempted to feed the engine off the right tank at which time the engine lost power. The pilot was on final approach to land at the time. The airplane contacted a powerline during the forced landing approach to a soybean field. The airplane came to rest in the field. Each fuel tank has an On-Off Selector. According to the pilot there is a return fuel line from the fuel pump to the right tank. Each tank holds seven gallons of fuel. Inspection revealed the left tank was empty and the right tank was full after the accident. The pilot suspected there was air in the line from the right tank which prevented fuel flow.
Factual narrative
On August 11, 1996, at 1000 central daylight time, a Ramesbotham CH701 homebuilt, collided with a powerline and the terrain during a forced landing following a loss of engine power. The loss of power and subsequent impact with the terrain occurred while on final approach to land at Graham Field, N. Sioux City, South Dakota. The airplane was substantially damaged. The pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed. The flight originated from N. Sioux City, South Dakota, at about 0915 cdt.
The pilot stated that the fuel system has a return line to the right tank for excess fuel pumped out of the left tank. Both fuel tanks have an independant On-Off selector. He stated that he usually flew on the left tank and would switch tot he right tank when the fuel level in the left tank got low. He stated that each tank holds 7 gallons and it usually took about 30 minutes to pump 5 gallons from the left tank.
The pilot stated he departed and flew the flight using the left fuel tank. The pilot reported that when the left tank got low, he switched to the right tank; however, the engine lost power. He suspects that there was air in the fuel lines from the right tank to the engine and that is why he was unable to regain power.
The airplane was at an altitude of approximately 700 feet above the ground when the loss of power occurred. The airplane contacted a powerline during the forced landing descent to a soybean field. The airplane then impacted the terrain in the soybean field.
Post accident inspection of the airplane revealed the left fuel tank was empty and the right tank contained approximately 7 gallons of fuel.
Aircraft
- Registration
- N4053G
- Reported as
- Ramesbotham CH701
- Category
- Airplane, amateur-built
- Serial number
- 001
- Airframe hours
- 176
- Engine
- Continental C-85, 85 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Vern J. Ramesbotham
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Continuous airworthiness · August 9, 1996 · 1 hours before
- Departed
- 7K7
- Destination
- 7K7
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 68
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 1,085 total · 176 in this make and model · 1,060 as pilot in command
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 120° at 5 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 4,900 ft broken
- Temperature
- 72 °F, dew point 61 °F
- Altimeter
- 30.00 inHg
- Observed at
- SUX, 10 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.