CEN19TA333

NTSB accident investigation · Lancair Lancair 320 · Bolivar, MO · September 25, 2019

Accident · No injuriesClass 3Final report
Date
September 25, 2019, 13:35 local (18:35 UTC)
Place
Bolivar, MO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N52WLLancair Lancair 320
Defining event
Approach: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20190925016989A
Case key
100337

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

Inadequate maintenance of the airplane, which resulted in a lack of adequate hydraulic fluid, malfunction of the landing gear extension system, and the landing gear collapse on landing.

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

While on approach for landing, the pilot activated the experimental airplane's landing gear extension switch and noticed that the right main landing gear indicator light was not illuminated. He recycled the landing gear, checked the circuit breaker, and performed an emergency landing gear extension; however, the right main landing gear did not extend. During the landing, the right wing contacted the runway and terrain. Examination of the airplane revealed that the hydraulic fluid reservoir contained a minimal amount of fluid. No visual leaks were noted with the hydraulic system. The reservoir tank was located aft of the firewall and was not visible during a pre-flight inspection due to fuselage structure. The airplane's annual condition inspection was expired; the pilot stated that he knew the inspection was out of date and was working on completing the inspection.

Factual narrative

On September 25, 2019, at 1335 central daylight time, a Lancair 320 airplane, N52WL, experience a landing gear system malfunction while on approach to Bolivar Municipal Airport (M17), Bolivar, Missouri. The private pilot was not injured, and the airplane sustained substantial damage to the right wing during the landing. The airplane was registered to and operated by the pilot as a Title 14 Code of Federal Regulations Part 91 personal flight. Visual meteorological conditions prevailed at the time of the accident, and a flight plan had not been filed. The airplane departed the Sparta/Fort McCoy Airport, Sparta, Wisconsin, at 1115, and was destined for M17. According to the pilot, while on visual approach to M17, he activated the landing gear extension switch and noticed the right main landing gear indication was not illuminated. The pilot recycled the landing gear, checked the landing gear circuit breaker, and performed an emergency landing gear extension; however, the right main landing gear did not extend. The pilot burned fuel for about 1 hour and landed on runway 18. During the landing, the right wing contacted the runway and terrain. The airplane came to rest upright. Examination of the airplane by Federal Aviation Administration inspectors revealed the airplane hydraulic fluid reservoir contained a minimal amount of fluid (see Figure 1). No visual leaks were noted with the hydraulic system. The reservoir tank was located aft of the firewall and was not visible during a pre-flight inspection due to fuselage structure. The most recent condition inspection was completed on January 12, 2017. The pilot stated he knew the inspection was out of date and was working on getting the inspection completed. Figure 1. Hydraulic Fluid Reservoir - Level Below Minimum (FAA)

Aircraft

Registration
N52WL
Reported as
Lancair Lancair 320 (No Series)
Category
Airplane, amateur-built
Serial number
325-320-86
Built
2014
Airframe hours
100
Engine
Lycoming IO-320-B1A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · January 12, 2017
Departed
CMY · Sparta, WI
Destination
M17 · Bolivar, MO
Airport
M17 · Bolivar Municipal Airport, runway 18, 4,000 × 75 ft, asphalt
Equipment
Unknown

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
65
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Last flight review
May 1, 2016
Seat
Left
Restraint
Lap only
Flight hours
1,225 total · 400 in this make and model · 1,110 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None

Docket · 4

The files NTSB released with the investigation on November 8, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 5.6 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.