- Date
- August 18, 2018, 21:30 local (Aug 19, 2018, 04:30 UTC)
- Place
- Kelso, WA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N9031SBeech 36
- Defining event
- Enroute-descent: Fuel related
- Weather
- Visual (VMC) · Night
- Status
- Completed · report August 3, 2020
- Report
- Approved by Office Director
- NTSB office
- Western Pacific Region
- Parties
- Federal Aviation Administration
- FAA report
- 20180818014449A
- Case key
- 98177
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 fuel mismanagement, which led to fuel starvation, a total loss of engine power, and the subsequent forced landing to a field.
Findings · 3
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The pilot reported that, while en route to the destination airport during the personal flight, the engine lost power. The pilot initiated a forced landing to a field, which resulted in substantial damage to the airplane. The pilot reported that there were no mechanical malfunctions or failures with the engine or airframe that would have precluded normal operation. A postaccident examination of the airplane revealed that the right fuel tank was empty, while the left fuel tank was full. The pilot stated that he did not remember switching fuel tanks during the flight and that, given that the right fuel tank was empty, he likely ran out of fuel.
Factual narrative
On August 18, 2018, about 2130 Pacific daylight time, a Beech 36, N9031S, was substantially damaged when it was involved in an accident near Washington Regional Airport (KLS), Kelso, Washington. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations (CFR) Part 91 personal flight. The pilot reported that he had filled both fuel tanks the night before the accident; he estimated that he had over three hours of fuel for the cross-country flight the following evening. While en route to the destination airport the engine lost power, which resulted in an off airport landing in a field. A postaccident onsite examination of the airplane by a Federal Aviation Administration inspector revealed that no visible fuel was observed in the right side fuel tank. He then sumped the tank and no fuel was expelled. When he performed a visual inspection of the left side fuel tank, it appeared to be full. The pilot subsequently stated that based on the evidence of the right fuel tank being empty, he probably ran out of fuel. The pilot also mentioned that he could not remember switching fuel tanks. The pilot reported that there were no mechanical anomalies with the engine or airframe that would have precluded normal operation.
Aircraft
- Registration
- N9031S
- Reported as
- Beech 36 (Undesignat)
- Category
- Airplane
- Serial number
- E-117
- Built
- 1968
- Airframe hours
- 6,391.4
- Engine
- Continental Motors IO-520, 280 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · August 16, 2018 · 4 hours before
- Departed
- TIW · Tacoma, WA
- Destination
- PDX · Portland, OR
- Equipment
- Electronic primary flight display, ADS-B, Auto-pilot
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
- 48
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Last flight review
- October 9, 2016
- Seat
- Left
- Restraint
- 3-point
- Flight hours
- 559 total · 135 in this make and model · 478 as pilot in command · 64 in the last 90 days · 9 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Night
- Wind
- 310° at 5 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 68 °F, dew point 57 °F
- Altimeter
- 30.09 inHg
- Observed at
- KLS, 1 nm away
Docket · 5
The files NTSB released with the investigation on June 2, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.8 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N9031S · 2
Matched to the same aircraft by N-number and date.