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Atlas / NTSB / GAA19CA250

NTSB CAROL · Event

Event GAA19CA250

2019-05-06 Denton, Texas, United States Airport · DTO None 1 aircraft Status: Completed

Registry · N5990

FAA Aircraft Registry record.

Make / Model

BELL 47G-2

Engine

LYCOMING VO-435 SERIES (260 hp)

Seats / Engines

3 seats · 1 engine

Last airworthiness date

19960430

ADS-B equipped

Yes — Mode-S A7C12E

Registrant of record

AAA AERIAL SOLUTIONS LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The flight instructor's improper decision to instruct the student pilot to establish a hover and reposition the helicopter with a tailwind, which resulted in the student pilot's loss of pitch control.

Factual narrative

The student helicopter pilot reported that he hovered to the parking pad and landed with the nose of the helicopter facing north. The skid placement on the parking pad was incorrect, and the instructor directed the student to reposition the helicopter about 3ft to the left. The student brought the helicopter to a hover and repositioned the helicopter 3ft to the left. However, before the student established a descent and landed, the helicopter encountered a tailwind gust. The nose pitched down, the rotor rpm decreased, and the helicopter traveled about 75ft forward. The skids contacted the ground hard, and the helicopter came to an abrupt stop, upright and facing downslope. The main rotor blades struck the tail rotor drive shaft and the tailboom. The tail rotor gear box and the tail rotor separated from the helicopter. The helicopter sustained substantial damage to the tail rotor drive system, the tailboom, and the main rotor blades. The airport's Meteorological Aerodrome Report, about the time of the accident, reported that the wind was from 180° at 15 knots, and the cloud layer was broken at 800ft. The predominant wind about 30 minutes prior to the accident was from 170° at 13 knots. One-hour prior, the wind was from 160 at 09 knots. The pilot reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation. The student pilot reported that he hovered the helicopter to the parking pad and landed with the helicopter's nose facing north. The skid placement on the parking pad was incorrect, and the flight instructor directed the student to reposition the helicopter about 3 ft to the left. The student brought the helicopter to a hover and repositioned it 3 ft to the left. However, before the student established a descent and landed, the helicopter encountered a tailwind gust. The nose pitched down, the rotor rpm decreased, and the helicopter traveled about 75 ft forward. The skids contacted the ground hard, and the helicopter came to an abrupt stop, upright and facing downslope. The main rotor blades struck the tail rotor drive shaft and the tailboom. The tail rotor gear box and the tail rotor separated from the helicopter. The helicopter sustained substantial damage to the tail rotor drive system, the tailboom, and the main rotor blades. The pilot reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation. The airport's METAR reported that, about the time of the accident, the wind was from 180° at 15 knots and that the cloud layer was broken at 800 ft. 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-Instructor/check pilot
  • C Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot
  • C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Pitch control-Not attained/maintained
  • C Environmental issues-Conditions/weather/phenomena-Wind-Tailwind-Decision related to condition
  • C Environmental issues-Conditions/weather/phenomena-Wind-Tailwind-Effect on operation

Verbatim from NTSB's published report. Source file NTSB_2019_GAA19CA250.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.