SEA04LA195
2004-09-20 · Seattle, Washington, United States · None · 1 aircraft · Status: Completed
Airport BFI
Current FAA registration · N43779
- Make / Model
- PIPER PA-28-181
- Year of manufacture
- 1977 · 27 years old at event
- Engine
- LYCOMING O&VO-360 SER (180 hp)
- Seats / Engines
- 4 seats · 1 engine
- Last airworthiness date
- 19770815
- ADS-B equipped
- Yes — Mode-S A5408E
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The failure of the pilot to maintain clearance with the parked airplane while taxiing. A factor contributing to the accident was the pilot's inadequate preflight planning.
Factual narrative
On September 20, 2004, at 1535 Pacific daylight time, a Piper PA-28-181, N43779, sustained substantial damage while taxiing for takeoff at the Boeing Field/King County International Airport (BFI), Seattle, Washington. The airplane is registered to Wings Aircraft LLC of Snohomish, Washington, and operated by Puget Sound Aviators of Seattle, Washington. The private pilot, sole occupant of the airplane, was not injured. Visual meteorological conditions prevailed for the planned personal flight, which was to be operated in accordance with 14 CFR Part 91, and a flight plan was not filed. The flight was originating at the time of the accident. According to the Pilot/Operator Aircraft Accident Report (NTSB form 6120.1/2), the pilot reported that he was not familiar with the area where his airplane was parked. After reviewing the airport diagram and taxiways, he noted that taxiway Bravo 8 (B8) at BFI was a marked entrance to the taxiway [taxiway B]. The pilot stated that as he was unfamiliar with other taxiway entrances (unmarked entrances), he chose to maneuver through the parking area to request entrance to [the] taxiway [at] B8. The pilot further stated that he turned left out of his parking area and proceeded north toward B8, but "...noted another aircraft parked close to my left leading edge." The pilot reported that as he approached to pass the other airplane he applied braking, being concerned that he had misjudged his clearance. The pilot stated, "In doing so I applied too much left brake, striking my left wing's leading edge with the parked aircraft." A post accident examination revealed that the outboard section of the left wing had sustained structural damage. Not familiar with the area where his airplane was parked, the pilot reviewed the airport diagram and taxiways. Still unfamiliar with the taxiway entrances, he elected to maneuver through the parking area and then request access to the taxiway. As he taxied toward the taxiway entrance, and noticing another airplane parked close to his taxi path, he braked to avoid the airplane. As a result of applying too much left brake, the outboard section of the airplane's left wing sustained structural damage after impacting the parked airplane. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_SEA04LA195.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.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type or causal vocabulary (icing). All research papers
- arXiv 2026 · arXiv preprint Enabling Beyond-Visual-Line-of-Sight Drones Operation over Open RAN 5G Networks with Slicing
Among the foretold claims of the transition from 5G to 6G, Beyond-Visual-Line-of-Sight (BVLoS) drone operation has emerged as a prominent Internet-of-Robots enabler.
- NASA NTRS 2026 · Contractor Report (CR) Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- NASA NTRS 2025 · Presentation NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- arXiv 2024 · arXiv preprint An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…