ERA10CA337
2010-06-28 · Great Barrington, Massachusetts, United States · Serious · 1 aircraft · Status: Completed
Airport GBR
Aircraft involved
Probable cause & findings
The pilot's attempted visual flight into night instrument meteorological conditions, which resulted in spatial disorientation and subsequent controlled flight into terrain.
Factual narrative
The pilot departed his home airport at night, in foggy conditions, and returned on an instrument flight rules (IFR) clearance. He stated that the return flight was "routine" and was cleared for the NDB-A approach into the airport. The pilot then canceled his IFR clearance and descended the airplane visually. He stated he entered the downwind leg for a "tighter than normal pattern" to avoid the fog at the approach end of the runway, however, GPS data revealed a spiraling descent in the vicinity of the base leg of the traffic pattern. The pilot stated, "Again, everything was routine until the base leg...As I continued, with the runway and runway environment in sight, I suddenly felt an impact...Not seeing the terrain surrounding the airport while having the airport in sight, lulled me into the belief that I was on or near glide path when, in fact, I was much lower, causing the CFIT (controlled flight into terrain)." The airplane incurred substantial damage to the left wing and left side of the fuselage. The pilot reported that there were no mechanical failures or malfunctions of the airplane. Weather reported 15 miles north included a 100-foot ceiling and a half mile of visibility due to fog. Witnesses surrounding the accident airport described the fog as "heavy" with visibility "less than 100 feet." The pilot departed his home airport at night, in fog, and returned on an instrument flight rules (IFR) clearance. He stated that the return flight was routine and the air traffic controller cleared him for the approach into the airport. The pilot then canceled his IFR clearance, descended visually, and entered a left traffic pattern to land. The pilot stated that he entered the downwind leg for a "tighter than normal" pattern to avoid the fog at the approach end of the runway; however, global positioning system data revealed a spiraling descent in the vicinity of the base leg of the traffic pattern. The pilot stated that not seeing the terrain surrounding the airport while having the airport in sight lulled him into the belief that he was on or near glide path when, in fact, he was much lower, causing the controlled flight into terrain. The airplane incurred substantial damage to the left wing and left side of the fuselage. The pilot reported that there were no mechanical failures or malfunctions of the airplane. Airports 15 miles north and 10 miles west each reported ceilings less than 100 feet, and visibility less than a half mile, and witnesses surrounding the airport described the fog as heavy with visibility of less than 100 feet. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Action/decision-Action-Incorrect action performance-Pilot - C
- — Environmental issues-Conditions/weather/phenomena-Ceiling/visibility/precip-Low visibility-Effect on operation
- — Environmental issues-Conditions/weather/phenomena-Ceiling/visibility/precip-Fog-Effect on operation
- C Personnel issues-Psychological-Perception/orientation/illusio-Spatial disorientation-Pilot - C
Verbatim from NTSB's published report. Source file
NTSB_2010_ERA10CA337.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 (spatial disorientation, controlled flight into terrain, cfit). All research papers
- Flight Safety Foundation 2023 · FSF / AeroSafety World Controlled Flight Into Terrain (CFIT) — A 2023 Industry Refresh
Foundation 2023 CFIT data refresh — three decades after the original CFIT Task Force eliminated >95% of air-carrier CFIT, the GA + Part 135 communities still account for most CFIT fatalities.
- NASA NTRS 2019 · Technical Publication (TP) Flight Simulator Evaluation of Synthetic Vision Display Concepts to Prevent Controlled Flight Into Terrain (CFIT)
In commercial aviation, over 30-percent of all fatal accidents worldwide are categorized as Controlled Flight Into Terrain (CFIT) accidents, where a fully functioning airplane is inadvertently flown i…
- NASA NTRS 2019 · Other Preliminary Effect of Synthetic Vision Systems Displays to Reduce Low-Visibility Loss of Control and Controlled Flight Into Terrain Accidents
An experimental investigation was conducted to study the effectiveness of Synthetic Vision Systems (SVS) flight displays as a means of eliminating Low Visibility Loss of Control (LVLOC) and Controlled…
- NASA NTRS 2019 · Technical Memorandum (TM) Rating the Relevance of QUORUM-Selected ASRS Incident Narratives to a "Controlled Flight into Terrain" Accident
An exploratory study was conducted to identify commercial aviation incidents that are relevant to a "controlled flight into terrain" (CFIT) accident using a NASA-developed text processing method.
- NASA NTRS 2018 · Preprint (Draft being sent to journal) CFIT Prevention Using Synthetic Vision
In commercial aviation, over 30-percent of all fatal accidents worldwide are categorized as Controlled Flight Into Terrain (CFIT) accidents where a fully functioning airplane is inadvertently flown in…
- Embry-Riddle Scholarly Commons 2001 · Journal article (JAAER) Controlled Flight into Terrain: How the Airlines and the Federal Aviation Administration are Addressing the Problem
Controlled Flight into Terrain (CFIT) is not a new problem. It has been around since the beginning of manned flight. A CFIT accident occurs when an airworthy aircraft, under the control of a pilot, is…