NTSB CAROL · Event
Event ANC03LA111
Registry · N4418Z
FAA Aircraft Registry record.
Make / Model
PIPER PA-18-150
Year of manufacture
1968 · 35 years old at event
Engine
LYCOMING 0-320 SERIES (180 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20030529
ADS-B equipped
Yes — Mode-S A551DC
Registrant of record
HIGH WIND AVIATION SERVICE LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain airspeed, which resulted in an inadvertent stall, and subsequent in-flight collision with terrain. A factor associated with the accident was a downdraft.
Factual narrative
On September 7, 2003, about 2010 Alaska daylight time, a wheel-equipped Piper PA-18-160 airplane, N4418Z, sustained substantial damage following a loss of control while maneuvering over a remote off-airport site, located approximately 25 miles southwest of Skwentna, Alaska. The private pilot/airplane owner sustained serious injuries, and the sole passenger sustained minor injuries. The Title 14, CFR Part 91 personal flight operated in visual meteorological conditions without a flight plan. The flight departed from a private airstrip located in Wasilla, Alaska, about 1830. In the NTSB Pilot/Operator Accident Report (form 6120.1) submitted by the pilot, he reported he intended to fly over a 1,200 foot long, gravel-surfaced site before attempting to land. He said that as he maneuvered the airplane for the fly over, he applied 10 degrees of wing flaps, and a "downdraft came over the wings and stalled them both..." Subsequently, the airplane struck the ground in a nose down attitude, and came to rest about 200 feet from the approach end of the intended landing site. The airplane sustained structural damage to the wings, fuselage, and empennage. The pilot noted that weather conditions at the time of the accident were, in part: Sky conditions and ceilings, clear; visibility, 20 statute miles; temperature, 50 degrees F; wind, calm. The pilot stated that there were no preaccident mechanical anomalies with the airplane. The private pilot was attempting to fly over a 1,200 foot long, gravel-surfaced site before landing. He reported that as he maneuvered the airplane for the fly over, he applied 10 degrees of wing flaps, and a "downdraft came over the wings and stalled them both... ." The airplane subsequently struck the ground in a nose down attitude, and came to rest about 200 feet from the approach end of the intended landing site. The airplane sustained structural damage to the wings, fuselage, and empennage. The pilot noted that there were no preaccident mechanical anomalies with the airplane. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2003_ANC03LA111.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 (stall, loss of control). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.
- 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
Colgan Air 3407 / Continental Connection (Q400) Buffalo NY, February 12, 2009 — 50 fatalities. Definitive investigation of the Colgan 3407 stall-stick-pusher crash on approach to Buffalo.
- 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…
- arXiv 2025 · arXiv preprint
Quadratic Programming Approach to Flight Envelope Protection Using Control Barrier Functions
Ensuring the safe operation of aerospace systems within their prescribed flight envelope is a fundamental requirement for modern flight control systems.
- 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.
Browse the full corpus — academia portal ↗