NTSB CAROL · Event
Event CHI99LA156
Registry · N133BA
FAA Aircraft Registry record.
Make / Model
BEECH 1900C
Year of manufacture
1986 · 13 years old at event
Engine
P&W CANADA PT6A-65B (1173 hp)
Seats / Engines
19 seats · 2 engines
Last airworthiness date
20140221
ADS-B equipped
Yes — Mode-S A08670
Registrant of record
ALPINE AVIATION INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
Failure of the left main landing gear actuator for undetermined reasons.
Factual narrative
On May 17, 1999, at 1840 central daylight time (cdt), a Beech 99A, N133BA, operated by an airline transport pilot, sustained substantial damage when the airplane's left main landing gear collapsed during landing roll at the Bemidji-Beltrami County Airport, Bemidji, Minnesota. Visual meteorological conditions prevailed at the time of the accident. The systems flight test was being conducted under 14 CFR part 91. No flight plan was on file. The pilot reported no injuries. The local flight originated at Bemidji, Minnesota, at 1740 cdt. In his written statement, the pilot said that following takeoff and raising the landing gear, the red warning light in the landing gear handle failed to go out. The pilot said that he recycled the landing gear, but could not get the red light to go out. The pilot said that he continued with the test flight. On his return to the airport the pilot said he put the landing gear handle down and nothing happened. He recycled the handle two additional times with no results. The pilot overflew the airport and confirmed with his company's maintenance that the landing gear were still up. The pilot said that he then manually pumped the landing gear down, but only the nose gear and right main gear green indicator lights illuminated. The pilot overflew the airport again. His company's maintenance told him that the three gear were down. The pilot came into land. He said that he touched down on the right main gear first, and then gently lowered the left main gear to the runway. The landing gear held. The pilot said he then tried to apply some reverse thrust. Suddenly, the left main gear collapsed, and the left wing struck the runway. The airplane slid off of the left side of the runway and came to a stop in the grass. A Federal Aviation Administration (FAA) inspector examined the airplane at Bemidji-Beltrami County Airport. The outboard two feet of the airplane's left wing, to include the rear spar, was bent upward approximately 10 degrees. The bottom wing skin and wing tip showed heavy longitudinal scraping. The bottom outboard 12 inches of the left aileron was scraped longitudinally. The bottom of the left engine nacelle near the exhaust was bent inward and showed longitudinally-running scrapes in the metal. The trailing edge and bottom of the airplane's left flap was bent upward. The left propeller's three blades were bent rearward and showed torsional bending and chordwise scratches. The left main gear doors showed scraping. The left main landing gear actuator shaft was broken aft. Flight control continuity was confirmed. Examination of the airplane's engines, engines controls, and other airplane systems revealed no anomalies. An examination of the left main landing gear actuator revealed no anomalies. The pilot said that after takeoff and raising the landing gear, the red warning light in the landing gear handle failed to go out. The pilot recycled the landing gear, but could not get the red light to go out. On return to the airport, the pilot lowered the landing gear handle down, but nothing happened. He recycled the handle two additional times with no results. The pilot overflew the airport and confirmed that the landing gear were still up. The pilot manually pumped the landing gear down. Only the nose gear and right main gear green indicator lights illuminated. The pilot overflew the airport again. He was told that the three gear were down. During the landing, the pilot touched down on the right main gear first, and then gently lowered the left main gear to the runway. The landing gear held. As the pilot applied reverse thrust, the left main gear suddenly collapsed. The airplane slid off of the left side of the runway and came to a stop in the grass. Examination of the airplane revealed no anomalies. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_CHI99LA156.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 ↗