ERA21LA018
2020-10-12 · Apison, Tennessee, United States · None · 1 aircraft · Status: Completed
Airport FGU
Current FAA registration · N801TP
- Make / Model
- ZENITH ZENITH 801
- Engine
- SUBARU ALL MDLS A/B (400 hp)
- Seats / Engines
- 4 seats · 1 engine
- Last airworthiness date
- 20041103
- ADS-B equipped
- Yes — Mode-S AAE74B
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
A total loss of engine power due to fuel starvation, as a result of an incorrectly placarded fuel selector.
Factual narrative
The pilot reported that the accident flight was his first flight in the experimental amateur-built airplane, and it was the first flight after a condition inspection. After an uneventful takeoff, the airplane experienced a total loss of engine power during the initial climb about 800 ft above ground level. The pilot was unable to restart the engine and subsequently performed a forced landing to a grassy clearing about 1 mile from the departure runway. During the rollout, the airplane impacted thick vegetation and trees, which resulted in substantial damage to the fuselage and wings. Postaccident examination of the airplane revealed that the left fuel tank was empty, and the right fuel tank contained about 12 gallons. Additionally, the fuel selector placards for LEFT and RIGHT were mislabeled backwards. The pilot reported that prior to takeoff, there was about 15 gallons of fuel in the right fuel tank, and “only a couple of gallons” in the left fuel tank. As a result, he placed the fuel selector toward the sticker-type placard that stated RIGHT, although the fuel selector was pointed toward the left wing. According to the pilot, the most recent condition inspection did not involve any action that would have involved the fuel selector placards. Review of past maintenance records found several instances of fuel system maintenance; however, no entry described an action about placards at the fuel selector. Therefore, the investigation was unable to identify when the fuel tanks became incorrectly placarded. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- — Aircraft-Fluids/misc hardware-Fluids-Fuel-Incorrect service/maintenance
- — Personnel issues-Task performance-Maintenance-Modification/alteration-Unknown/Not determined
Verbatim from NTSB's published report. Source file
NTSB_2020_ERA21LA018.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
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Related research
Matched on aircraft type or causal vocabulary (fuel starvation, maintenance). All research papers
- 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 2026 · Article (Reliability Engineering & System Safety) Understanding human error in military aviation maintenance: The role of Performance shaping factors, cognitive workload and error orientation
- 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.
- Semantic Scholar 2024 · Article (Defence Science Journal) Modelling of Human Factors in Aviation Maintenance Using HFACS ME Human Factors Analysis and Classification System Maintenance Extension and Bayesian Network
Aircraft maintenance is a complex task involving a skilled human workforce, spare parts, and various other resources. Human factors are an inherent element of the human workforce.
- 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 (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…