NTSB CAROL · Event
Event GAA18CA415
Registry · N4509S
FAA Aircraft Registry record.
Make / Model
AIR TRACTOR INC AT-502
Year of manufacture
1990 · 28 years old at event
TCDS
A17SW · AIR TRACTOR INC
Engine
P&W CANADA PT6A-60A (1050 hp)
Seats / Engines
1 seats · 1 engine
Last airworthiness date
19900320
ADS-B equipped
Yes — Mode-S A575C0
Registrant of record
TALL TOWERS AG SERVICE INC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot’s selection of unsuitable terrain for landing in crosswind conditions, which resulted in the airplane inadvertently becoming airborne and a subsequent hard landing and loss of directional control.
Factual narrative
The pilot reported that, after an aerial application flight, during the landing roll in a rain shower and with a crosswind, the tailwheel-equipped airplane hit a "bump" and became airborne. He added that the airplane was slow, drifted left, and touched down hard. Subsequently, the airplane exited the runway and ground looped. The pilot added that, he should have possibly landed further down the runway to avoid the bumps that sent him back into the air. The airplane sustained substantial damage to the fuselage, empennage and left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. An automated weather observation system located about 19 nautical miles from the accident site reported that, about the time of the accident, the wind was from 260° at 12 knots. The pilot landed on runway 18. The pilot reported that, after an agricultural application flight, during the landing roll in a rain shower and with a crosswind, the tailwheel-equipped airplane hit a "bump" and became airborne. He added that the airplane was slow, drifted left, and touched down hard. Subsequently, the airplane exited the runway and ground looped. The pilot reported that he should have landed farther down the runway to avoid the bumps that caused the airplane to become airborne. The airplane sustained substantial damage to the fuselage, empennage, and left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. An automated weather observation system located about 19 nautical miles from the accident site reported that, about the time of the accident, the wind was from 260° at 12 knots. The pilot landed the airplane on runway 18. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).
- C Personnel issues-Action/decision-Info processing/decision-Decision making/judgment-Pilot - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
- C Environmental issues-Physical environment-Terrain-Rough terrain-Decision related to condition - C
- — Environmental issues-Conditions/weather/phenomena-Wind-Crosswind-Effect on operation
Verbatim from NTSB's published report. Source file
NTSB_2018_GAA18CA415.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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