NTSB CAROL · Event
Event CEN17LA212
Registry · N1854F
FAA Aircraft Registry record.
Make / Model
CESSNA 210F
Year of manufacture
1966 · 51 years old at event
Engine
CONT MOTOR IO 520 SERIES (285 hp)
Seats / Engines
4 seats · 1 engine
Last airworthiness date
19660504
ADS-B equipped
Yes — Mode-S A15629
Registrant of record
HARLAN BRADLEY J
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The failure of the landing gear to fully extend due to insufficient hydraulic fluid in the hydraulic system as a result of inadequate maintenance by the airplane owner.
Factual narrative
On June 2, 2017 about 1911 central daylight time, a Cessna 210F, N1854F, sustained substantial damage during landing at the Anoka County-Blaine Airport (ANE), Anoka, Minnesota. The pilot was not injured. The airplane was owned and operated by the pilot under the provisions of the Title 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the flight, which was not operated on a flight plan. The flight was departing at the time of the accident with Park Rapids Municipal Airport (PKD), Park Rapids, Minnesota, as the destination. The pilot reported that the airplane's landing gear did not fully retract when he raised the gear handle during the takeoff climb. The pilot reported that he attempted to lower the landing gear using emergency procedures without success. He returned to ANE and continued to fly over the airport for about an hour to burn off more fuel, and to continue trying to lower the landing gear using emergency procedures. He stated that he tried manually extending the landing gear with the master switch in the On and OFF position, but without effect. The ANE tower controller confirmed that the main landing gear were in a partially retracted position, and that the nose wheel was in the down position. The pilot conducted a full flap landing to runway 18. As the airplane settled onto the runway, the main landing gear retracted into the landing gear bay. The airplane veered off the runway and the right horizontal stabilizer was substantially damaged as the airplane skidded to a stop. A Federal Aviation Administration inspector's examination of the airplane revealed that there was insufficient hydraulic fluid in the system to manually pump the landing gear into the fully extended position. The hydraulic hoses were original equipment from 1966 but they appeared functional. No obvious hydraulic fluid leaks were observed. The pilot reported that the airplane's hydraulic system had been over pressurized by a mechanic a few years before the accident, and that there had been trouble with hydraulic leaks ever since. He reported that he added hydraulic fluid to the reservoir every 12 hours, but there were no aircraft maintenance logbook write-ups concerning the work performed. He reported that a few days before the accident, he had filled the hydraulic reservoir and then flew the airplane for about 45 to 60 minutes. He did not recheck the hydraulic reservoir after that flight. The airplane's owner reported that the last annual maintenance inspection was performed on December 1, 2016, and the airplane had a total airframe time of 6,736 hours. However, the mechanic reported that he conducted the last annual maintenance inspection of the airplane on December 20, 2016. He stated that he gave the airplane's owner a maintenance entry on a "sticky note" that indicated that an annual maintenance inspection had been performed. The mechanic did not have a copy of the maintenance entry. The mechanic reported that although the airplane has a history of hydraulic system leaks due to an apparent over pressurization of the system by another mechanic in the past, during the last annual inspection, the landing gear operated satisfactorily with no obvious leaks. The mechanic stated that he was unaware that the pilot had to continually add hydraulic fluid. The mechanic stated that about a year earlier, he replaced an O-ring in the hydraulic filter screen. The private pilot, who was the owner of the airplane, reported that the airplane's landing gear did not fully retract when he raised the gear handle after takeoff. He attempted to lower the landing gear using emergency procedures without success. He subsequently conducted a full-flap landing, and as the airplane settled onto the runway, the main landing gear retracted into the landing gear bay. The airplane veered off the runway and the right horizontal stabilizer was substantially damaged as the airplane skidded to a stop. Examination of the airplane revealed that there was insufficient hydraulic fluid in the system to manually pump the landing gear into the fully-extended position. The pilot reported that the airplane's hydraulic system had been over-pressurized by a mechanic a few years before the accident and that there had been trouble with hydraulic leaks ever since. He reported that he added hydraulic fluid to the reservoir every 12 flight hours; however, there were no aircraft maintenance logbook entries concerning the work performed. He also reported that, a few days before the accident, he had filled the hydraulic reservoir and then flew the airplane for between 45 and 60 minutes. He did not recheck the hydraulic fluid level after that flight. 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-Main landing gear-Incorrect service/maintenance - C
- C Personnel issues-Action/decision-Action-(general)-Owner/builder - C
- C Personnel issues-Task performance-Maintenance-(general)-Owner/builder - C
Verbatim from NTSB's published report. Source file
NTSB_2017_CEN17LA212.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.
Browse the full corpus — academia portal ↗