ANC04LA066
2004-06-20 · Anchorage, Alaska, United States · None · 1 aircraft · Status: Completed
Airport MRI
Current FAA registration · N4685A
- Make / Model
- CESSNA 180
- Year of manufacture
- 1956 · 48 years old at event
- Engine
- CONT MOTOR O-470 SERIES (230 hp)
- Seats / Engines
- 4 seats · 1 engine
- Last airworthiness date
- 19570712
- ADS-B equipped
- Yes — Mode-S A5BA5B
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain directional control during the landing roll, which resulted in a ground loop/swerve, and the left wingtip and propeller striking the runway. A factor associated with the accident was the installation of oversized tires on the main landing gear.
Factual narrative
On June 20, 2004, about 1834 Alaska daylight time, a wheel-equipped Cessna 180 airplane, N4685A, received substantial damage following a loss of control and collision with the runway during the landing roll at Merrill Field, Anchorage, Alaska. The 14 CFR Part 91 cross country personal flight was operated by the pilot/owner in visual meteorological conditions. The flight departed Homer, Alaska, about 1715, en route to Merrill Field, and a VFR flight plan was in effect. The private pilot and the one passenger were not injured. During a telephone conversation with the NTSB investigator-in-charge on June 23, the pilot related that during the landing roll on runway 24, the airplane lurched to the right. He said he was unable to maintain directional control despite the application of left rudder, and the airplane subsequently ground looped to the right. During the ground loop, the left wing and elevator struck the runway and received structural damage. The airplane came to rest nose down on the runway. The pilot noted that the tailwheel airplane is equipped with oversized main landing gear tires, and that the combination of the larger tires and warm runway surface conditions may have made the airplane more difficult to control. He also stated that he was unaware of any preaccident mechanical problems with the airplane. The private pilot was landing a tailwheel airplane equipped with oversized main tires on a warm asphalt runway. He reported that during the landing roll, the airplane lurched to the right, and he was unable to regain directional control. The airplane subsequently struck the left wing and propeller on the runway, and came to a rest nose down on the runway. The pilot stated the tailwheel airplane was equipped with oversized tires, and that the combination of large tires and warm runway surface may have made the airplane more difficult to control. He also noted that he was unaware of any preaccident mechanical problems with the airplane. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_ANC04LA066.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 (stall, loss of control). All research papers
- Semantic Scholar 2016 · Article (Interacción) Trajectory Recovery System: Angle of Attack Guidance for Inflight Loss of Control
This paper describes the design and development of an ecological display to aid pilots in the recovery of an In-Flight Loss of Control event due to a Stall (ILOC-S).
- NTSB Aircraft Accident Reports 2010 · Accident report Loss of Control on Approach — Colgan Air Flight 3407
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- NASA NTRS 2026 · Conference Paper Computational Analysis of Steady State Aerodynamics of Transonic Truss-Braced Wing Configuration in Deep Stall
This study presents a computational investigation of steady state aerodynamics of the Subsonic Ultra-Green Aircraft Research (SUGAR) Transonic Truss-Braced Wing (TTBW) configuration over a wide range …
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) 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…
- 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.
- Semantic Scholar 2024 · Article (International Conference on Networking and Services) Risk Assessment of Loss of Control In-Flight Trajectories for Urban Air Mobility Safety
In Urban Air Mobility (UAM), maintaining a minimum separation between aircraft is a safety requirement, which becomes challenging amidst congested air traffic and off-nominal conditions, such as Loss …