WPR18TA243

NTSB accident investigation · Beech 36 · Kelso, WA · August 19, 2018

Accident · No injuriesFinal report
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.

Fluids: fuelAircraft › Fluids/misc hardware · Fluid managementBeech 36: 1 caseAll aircraft: 1,695 casesProbable cause
Use of equip/info: use of equip/systemPersonnel issues › Task performance · PilotBeech 36: 1 caseAll aircraft: 1,391 casesProbable cause

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.