SEA07CA273
2007-09-25 · Chandler, Arizona, United States · None · 1 aircraft · Status: Completed
Airport P19
Aircraft involved
Probable cause & findings
The pilot's inadequate compensation for wind conditions while landing, which resulted in an undershoot and an in-flight collision with terrain. Factors associated with the accident were the downdraft, the uneven terrain, and the flight instructor's delayed remedial action.
Factual narrative
The flight instructor reported that while on a one mile final approach to Runway 17 and coaching the student pilot on a short field landing, he noticed the airplane's descent rate was greater than 500 feet per minute. The flight instructor stated that he advised the student pilot to increase power, but the student seemed "slow" to add power. The flight instructor further stated, "As we were 300 feet before [the] threshold of Runway 17 we experienced a sinking feeling, [like] a downdraft or vertical wind shear, followed by the airplane's right main landing gear impacting the edge of the asphalt runway, which protrudes a foot higher than terrain at that site." The flight instructor reported that the impact displaced the right main landing gear backward as the airplane skidded to a stop about 1,000 feet down the runway. The pilot stated that damage to the airplane included the right main landing gear bent aft, a hole in the top of the right wing post to the fuel cell, damage to the right flap and right aileron, as well as the left side of the fuselage being wrinkled. The flight instructor stated that there were no known mechanical anomalies with the airplane prior to the accident. The flight instructor reported that while on a one mile final approach to Runway 17 and coaching the student pilot on a short field landing, he noticed the airplane's descent rate was greater than 500 feet per minute. The flight instructor stated that he advised the student pilot to increase power, but the student seemed "slow" to add power. The flight instructor further stated, "As we were 300 feet before [the] threshold of Runway 17 we experienced a sinking feeling, [like] a downdraft or vertical wind shear, followed by the airplane's right main landing gear impacting the edge of the asphalt runway, which protrudes a foot higher than terrain at that site." The flight instructor reported that the impact displaced the right main landing gear backward as the airplane skidded to a stop about 1,000 feet down the runway. The pilot stated that damage to the airplane included the right main landing gear bent aft, a hole in the top of the right wing post to the fuel cell, damage to the right flap and right aileron, as well as the left side of the fuselage being wrinkled. The flight instructor stated that there were no known mechanical anomalies with the airplane prior to the accident. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2007_SEA07CA273.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 (wind shear). All research papers
- NASA NTRS 2019 · Conference Paper Optimal recovery from microburst wind shear
The flight path of a twin-jet transport aircraft is optimized in a microburst encounter during approach to landing. The objective is to execute an escape maneuver that maintains safe ground clearance …
- NASA NTRS 2019 · Contractor Report (CR) An Examination of Aviation Accidents Associated with Turbulence, Wind Shear and Thunderstorm
The focal point of the study reported here was the definition and examination of turbulence, wind shear and thunderstorm in relation to aviation accidents.
- NASA NTRS 2019 · Conference Paper Analysis of extreme wind shear
New methods utilizing extreme value statistical theory are applied in the analysis of the largest wind component shear in a wind profile as a function of shear layer thickness and season.
- NASA NTRS 2019 · Technical Memorandum (TM) Probabilities of zero wind shear phenomena based on Rawinsonde data records
Probabilities of zero wind shear occurence and depth based on rawinsonde data records
- NASA NTRS 2019 · Contractor Report (CR) A Wind Shear Mechanism for Producing Sporadic E by Concentrating Minor Meteoric Ions
Wind shear mechanism for producing sporadic E layer by concentrating minor meteoric ions
- NASA NTRS 2019 · Technical Memorandum (TM) Some aspects of wind shear in the upper atmosphere
Hydrodynamic turbulence and wind shear in upper atmosphere