NTSB CAROL · Event
Event WPR19LA239
Aircraft involved
Probable cause & findings
Failure of the landing gear solenoid, which resulted in failure of the landing gear position switch, and the pilot's subsequent inability to extend the gear using the manual emergency extension system for undetermined reasons.
Factual narrative
On August 24, 2019, about 1315 mountain daylight time, a Piper PA-24-250 airplane, N6696P, was substantially damaged during landing at the Wendover Airport (ENV), Wendover, Nevada. The private pilot and passenger were not injured. 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 and a flight plan was not filed. The cross-country flight departed South Valley Regional Airport (U42), Salt Lake City, Utah, at 1215, with a destination of ENV. The pilot reported that during the approach to ENV, he lowered the landing gear and waited for the landing gear indicator light to illuminate. When the indicator light did not illuminate, he continued to cycle the landing gear lever several times to no avail. The landing gear extension motor-raise motor release arm was released and the landing gear extension handle was operated. Despite his actions, the landing gear did not extend. The pilot contacted the airport's UNICOM and declared an emergency. Another pilot who was flying a helicopter in the area contacted the pilot and told him that he would come up along side the airplane to get a visual on the airplane's landing gear. The helicopter pilot reported that the landing gear was about a 1/3 extended. Furthermore, the pilot's wife used the landing gear spot mirrors and verified that the landing gear was partially extended; and that only the tires were visible. In a final attempt to get the landing gear extended, the pilot conducted heavy g-force maneuvers but was unsuccessful. The pilot decided that it was time to land at ENV and landed on the dirt section, adjacent to the runway. During the landing sequence, the airplane sustained substantial damage to the lower forward section of the fuselage. The airplane serial number (s/n) 24-1821, was manufactured in 1960 and purchased by the pilot in 2015. The low-wing airplane was equipped with four seats, retractable tricycle landing gear, and traditional flight control surfaces. The pilot reported having accrued 384 flight hours in the airplane at the time of the accident. A review of the maintenance logbooks and the tachometer reading at the accident site indicated that the airplane had a total time in service of 2,080.11 hours. On June 23, 2018, 5.62 flight hours before the accident, the landing gear was swung, and an emergency extension of the landing gear was performed during an annual inspection. No anomalies were noted. The airplane was relocated to a secure location and a postaccident examination was conducted by the National Transportation Safety Board (NTSB) investigator-in-charge (IIC). The landing gear system examination revealed that the landing gear would not extend under normal operations. After further examination, the landing gear solenoid was found inoperative. The emergency landing gear extension system was examined. The emergency landing gear motor-raise motor release arm, and the landing gear emergency gear handle was operated multiple times and no anomalies were noted. For further information on the post-accident examination see the Wreckage Examination Summary in the public docket for this accident. The pilot reported that, during approach for landing at the conclusion of the cross-country flight, the airplane's landing gear would not fully extend. The pilot subsequently actuated the hand emergency landing gear release lever, and the landing gear still would not fully extend to the down-and-locked position. The pilot then performed multiple heavy g-force maneuvers in an attempt to lower the landing gear but was unable to extend and lock the gear, and subsequently landed the airplane in a dirt area adjacent to the runway, which resulted in substantial damage to the lower fuselage. Examination revealed that the landing gear solenoid was inoperative, resulting in the failure of the gear to operate using the gear position switch; however, the emergency gear extension system operated multiple times during postaccident testing with no anomalies noted. 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 Aircraft-Aircraft systems-Landing gear system-Gear extension and retract sys-Inoperative - C
- — Aircraft-Aircraft systems-Landing gear system-Landing gear selector-Inoperative
- — Not determined-Not determined-(general)-(general)-Unknown/Not determined
Verbatim from NTSB's published report. Source file
NTSB_2019_WPR19LA239.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
What the literature says.
Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
From Reactive to Predictive: A hybrid Trust-Mediated Adoption Framework for Data-Driven Maintenance in Distributed-Authority Aviation Environments
Modern aviation maintenance operates within increasingly data-intensive technological environments, yet the operational integration of predictive maintenance into routine decision-making remains incon…
- Semantic Scholar 2025 · Article (Applied Sciences)
Decision-Making Framework for Aviation Safety in Predictive Maintenance Strategies
The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
Low-Resource Automatic Speech Recognition Domain Adaptation – A Case-Study in Aviation Maintenance
With timeliness and efficiency being critical in the aviation maintenance industry, the need has been growing for smart technological solutions that optimize and streamline the different underlying ta…
- Embry-Riddle Scholarly Commons 2024 · Journal article (JAAER)
A New Trajectory in UAV Safety: Leveraging Reinforcement Learning for Distance Maintenance Under Wind Variations
In the field of aviation, safety is a critical cornerstone, and the operation of Unmanned Aerial Vehicle (UAV) systems is deeply connected with this principle.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Just Culture in Aviation: A Metaphorical Study on Aircraft Maintenance Students
Just Culture, a sub-dimension of safety culture, has been a prominent and debated topic in aviation safety in recent years.
- Embry-Riddle Scholarly Commons 2024 · Journal article (IJAAA)
Performance PRISM: A Comprehensive Framework For Performance Measurement In Aircraft Maintenance
Aircraft maintenance is governed by rigorous safety requirements and high operational complexity, demanding robust performance measurement frameworks to ensure optimal maintenance practices.
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