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CEN19TA333

2019-09-25 · Bolivar, Missouri, United States · None · 1 aircraft · Status: Completed

Airport M17

Current FAA registration · N52WL

Make / Model
NEICO AVIATION INC LANCAIR 320
Year of manufacture
2014 · 5 years old at event
Engine
LYCOMING IO-320-B1A (160 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20141103
ADS-B equipped
Yes — Mode-S A68894

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

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.

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 The pilot stated he knew the inspection was out of date and was working on getting the inspection completed.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) 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. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • C Aircraft-Aircraft systems-Hydraulic power system-Reservoir, main-Not serviced/maintained - C
  • C Aircraft-Aircraft systems-Landing gear system-Gear extension and retract sys-Inoperative - C
  • F Personnel issues-Task performance-Maintenance-Scheduled/routine maintenance-Owner/builder - F

Verbatim from NTSB's published report. Source file NTSB_2019_CEN19TA333.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

Matched on aircraft type or causal vocabulary (maintenance). All research papers