# NTSB CHI96LA285: Ramesbotham CH701, N4053G, N. Sioux City, SD, August 11, 1996 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 11, 1996, 10:00 local (15:00 UTC) - Place: N. Sioux City, SD - Coordinates: 42.529144, -96.500137 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.5291&lon=-96.5001&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 23, 1997 - Report: Approved by Office Director - NTSB case key (mKey): 10351 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI96LA285 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/10351/pdf - Page: https://openairdocs.org/ntsb/CHI96LA285 ## 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 In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, approach - vfr pattern - final approach - fluid,fuel - starvation (cause) - fuel management - delayed, pilot in command (cause) - altitude - low, pilot in command (contributing factor) - Forced landing, emergency descent/landing - In flight collision with object, emergency descent/landing - object - wire,static (contributing factor) - In flight collision with terrain/water, descent - uncontrolled ## 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](https://openairdocs.org/deregistered/N4053G-2018-03-05), registration cancelled 2018-03-05, S/N 73177, built 1994 (OpenAirDocs) - Reported make and model: Ramesbotham CH701 - Registry model: [Ramesbotham Vern CH701](https://openairdocs.org/model/ramesbotham-vern-ch701) (registry code 05625TP) (OpenAirDocs) - Registry engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 001 - Airframe hours: 176 - Engines: 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 ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 68; 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 (OpenAirDocs). - [Accident 19960811022179A](https://openairdocs.org/incident/19960811022179A), Aug 11, 1996: Amtr CH701, Sioux City, SD, Substantial damage. Aircraft ran out of fuel on short final, switched tanks but not soon enough, crashed near airport. (.4)the pilot reported that he flew the flight using the… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.