NTSB CAROL · Event
Event CEN20LA304
Registry · N383ES
FAA Aircraft Registry record.
Make / Model
BRANTLY B-2B
TCDS
2H2 · BRANTLY INTERNATIONAL INC
Seats / Engines
2 seats · 1 engine
ADS-B equipped
Yes — Mode-S A466E4
Registrant of record
DRAKE AIR LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s loss of control after takeoff for reasons that could not be determined based on the available information.
Factual narrative
HISTORY OF FLIGHTOn July 24, 2020, about 1316 eastern daylight time, a Brantly B2B helicopter, N383ES, was destroyed when it was involved in an accident near Monrovia, Indiana. The pilot was fatally injured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 91 maintenance test flight. A witness stated that the pilot was performing a maintenance test flight, after a 100-hour interval and annual inspection was performed. The pilot completed three or four short flights around the pilot's property before taking off and traveling southerly at an altitude of about 20 ft above ground level. The pilot’s wife stated that it sounded like the helicopter was “missing.” A witness stated that it looked like the helicopter was exiting effective translational lift when the helicopter dipped, it turned right abruptly, and hit the ground. A post-crash fire started immediately, and the wreckage was destroyed. WRECKAGE AND IMPACT INFORMATIONThe wreckage was destroyed by impact forces and post-crash fire. The landing gear skid were separated from the fuselage. The main rotor assembly and tail rotor assembly were separated from the fuselage and tailboom, both of which were resting along the wreckage path. The tailboom, with the tail rotor driveshaft, was attached to the fuselage. A postaccident examination of the engine cylinders using a borescopeshowed no amonalies. Continuity of the engine valve and drive train to the accessory section was confirmed. The accessories could not undergo functional testing due to post-crash fire and impact damage. Examination of the flight control system confirmed flight control continuity. MEDICAL AND PATHOLOGICAL INFORMATIONThe pilot initially survived and was transported to a hospital for specialized burn/trauma care. No significant pre-existing natural disease was documented. An early hospital blood test for ethanol was negative. The pilot succumbed to his injuries on the day of the accident. The Marion County Coroner's Office performed the pilot’s autopsy, which was limited to an external examination only. According to the autopsy report, the cause of death was thermal burn injuries, and the manner of death was accident. Toxicological testing detected the medications amlodipine and atorvastatin in the pilot’s blood. Those medications generally are not considered impairing. Also detected in blood were morphine, ketamine, norketamine, and etomidate, all of which were attributable to medications administered to the pilot during his initial medical care after the accident. The pilot was performing an annual inspection and maintenance flight for the helicopter at the time of the accident. After the pilot completed three or four short flights prior to attempting an additional flight. During this flight, the helicopter was exiting translational lift when it dipped and turned right abruptly and hit the ground. Postaccident examination of the helicopter confirmed flight control continuity. Additional examinations of the engine were limited due to damage incurred from impact damage and postimpact fire. The reasons for any loss of control and/or engine failure could not be determined. There was no available evidence that a medical factor contributed to the crash. 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).
- — Aircraft-Aircraft oper/perf/capability-Performance/control parameters-(general)-Unknown/Not determined
Verbatim from NTSB's published report. Source file
NTSB_2020_CEN20LA304.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 (loss of control, engine failure, 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.
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- Embry-Riddle Scholarly Commons 2026 · Journal article (IJAAA)
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A Scoping Review of Aviation Loss of Control Inflight Research
Loss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recove…
- Semantic Scholar 2025 · Article (Applied Sciences)
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The implementation of predictive maintenance (PM) in aviation presents unique challenges due to strict safety requirements, complex operational environments, and regulatory constraints.
- SKYbrary (Eurocontrol) 2024 · SKYbrary article
Loss of Control In-Flight (LOC-I) — SKYbrary Knowledge Base
SKYbrary comprehensive knowledge-base entry on Loss of Control In-Flight — definitions, contributing factors, accident case studies (Air France 447, Colgan 3407), and prevention strategies.
- 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…
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