NTSB CAROL · Event
Event CEN17LA348
Aircraft involved
Probable cause & findings
The improperly seated fuel cap, which resulted in an in-flight fuel leak and subsequent total loss of engine power due to fuel starvation.
Factual narrative
On September 12, 2017, about 1300 central daylight time, a Beech N35 airplane, N9368Y, was substantially damaged during a forced landing near South Bend International Airport (SBN), South Bend, Indiana. The commercial pilot and passenger were not injured. The personal flight was conducted under the provisions of 14 Code of Federal Regulations Part 91. Visual meteorological conditions prevailed and no Federal Aviation Administration (FAA) flight plan had been filed for the flight. The flight departed Johnson County Executive Airport (OJC), Olathe, Kansas, about 0930, and was en route to SBN. According to the pilot, while on final approach for runway 9R, the engine "missed". The pilot attempted to increase engine power by advancing the engine throttle control forward. There was no response from the engine. During the forced landing the main landing gear clipped the elevated island between two oncoming lanes of traffic. The airplane bounced and struck a car before coming to rest in the grass adjacent to the road. The left wing was bent and buckled during the forced landing. Prior to the recovery of the airplane from the accident site, the FAA inspector, who responded to the accident, recovered about a cup of fuel from the right fuel tank. There was visible fuel in the left fuel tank. A postaccident examination of the airplane, following its recovery, revealed blue-colored fuel streaking from the right-wing fuel filler aft to the trailing edge of the right-wing flap. The right fuel tank was empty, and the left fuel tank had about 10 gallons of fuel. The fuel cap and seat were unremarkable. An examination of the engine and remaining systems revealed no anomalies that would have precluded normal operation. The commercial pilot reported that the airplane was nearing the destination at the conclusion of a long cross-country flight when the engine experienced a total loss of power. The pilot declared an emergency and conducted a forced landing to a highway. During the forced landing, the airplane struck an elevated island and a car and was substantially damaged. A postaccident examination of the airplane revealed blue-colored fuel stains streaking from the right wing fuel filler aft to the trailing edge of the right wing flap. The right fuel tank contained 1 cup of fuel and the left fuel tank had about 10 gallons of fuel. The fuel cap and seat were unremarkable. An examination of the engine and remaining systems revealed no anomalies. It is likely that the right fuel cap was not seated properly before takeoff, which resulted in the siphoning of the fuel during the flight, and a subsequent total loss of engine power due to fuel starvation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Personnel issues-Task performance-Use of equip/info-Use of equip/system-Pilot - C
- C Aircraft-Fluids/misc hardware-Fluids-Fuel-Fluid level - C
- C Aircraft-Aircraft systems-Fuel system-(general)-Incorrect use/operation - C
- — Aircraft-Fluids/misc hardware-Misc hardware-(general)-Incorrect use/operation
Verbatim from NTSB's published report. Source file
NTSB_2017_CEN17LA348.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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