SEA07LA059
2007-02-21 · Auburn, Washington, United States · Minor · 1 aircraft · Status: Completed
Airport S50
Aircraft involved
Probable cause & findings
A loss of engine power due to the obstruction of the engine's air inlet by a fabricated neoprene seal, and inadequate maintenance by unknown maintenance personnel. A contributing factor was the lack of suitable terrain for a forced landing.
Factual narrative
On February 21, 2007, at approximately 1415 Pacific standard time, a Barnhart RV-6 experimental homebuilt airplane, N601DB, was substantially damaged during a forced landing attempt following a loss of engine power at Auburn Municipal Airport (S50), Auburn, Washington. The airline transport pilot, the sole occupant on board, received minor injuries. The pilot/owner was operating the airplane under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the local flight which was originating at the time of the accident. A flight plan had not been filed. The pilot said that he had just departed from runway 16 when the airplane's engine lost power. He said that at that moment there was a motel and casino in front of him, so he performed a 90 degree left-hand turn. The pilot landed the airplane parallel to and inside the airport perimeter fence with the right wing sliding along the fence. The airplane landed hard on both main landing gear, and they immediately collapsed. Additionally the engine mounts were broken, the engine firewall was wrinkled, both wings exhibited buckling and wrinkling, and the fuselage was wrinkled. Postaccident examination of the engine revealed that a large piece of neoprene was lodged in the engine's air intake. The pilot said that he and the mechanic fabricated a neoprene seal for the engine's air intake during the conditional inspection, which was completed on February 12, 2007. The pilot said he departed Boeing Field, Seattle, Washington, and flew to Auburn, Washington, for a touch-and-go landing. The airplane had flown 0.2 hours, out of conditional inspection, at the time of the accident. During the initial climb after take off, the airplane's engine lost power. The pilot said there was a motel and casino in front of him, so he performed a 90 degree left-hand turn. The pilot landed the airplane parallel to and inside the airport perimeter fence with the right wing sliding along the fence. The airplane landed hard on both main landing gear and they collapsed. Additionally the engine mounts were broken, the engine firewall was wrinkled, both wings exhibited buckling and wrinkling, and the fuselage was wrinkled. Post accident examination of the engine revealed that a large piece of neoprene was lodged in the engine's air intake. The pilot said that he and the mechanic fabricated a neoprene seal for the engine's air intake during the conditional inspection, which was completed on February 12, 2007. The airplane had flown 0.2 hours, out of conditional inspection, at the time of the accident. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2007_SEA07LA059.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (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…