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May 3, 2024 · Robinson Helicopter R22 BETA · N4082J

Olympia, WA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
May 3, 2024
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Olympia, WA
Aircraft
Robinson Helicopter R22 BETA (1991)
Tail Number
N4082J
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR24LA139

On May 3, 2024, about 1600 Pacific daylight time, a Robinson Helicopter R22 Beta, N4082J was substantially damaged when it was involved in an accident near Tumwater, Washington. The flight instructor received minor injuries and the student pilot was uninjured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 91 instructional flight. According to the flight instructor, he and the student pilot were conducting a training flight at the Olympia Regional Airport, Tumwater, Washington. Prior to the accident, the instructor air taxied the helicopter at about 50 kts, on a northeasterly heading, from a practice area in the southwest corner of the airport, toward a practice area near the northeast corner of the airport. As the helicopter approached the second practice area from the southwest, the instructor began a pedal turn to the left, to realign the helicopter into the prevailing wind. During the pedal turn, the helicopter was in a descent and still traveling in a northerly direction. Approximately 10 ft above ground level, the instructor began to raise the collective, to arrest the helicopter’s descent, however, helicopter continued to descend, and its right skid struck the ground. Subsequently, the helicopter pitched forward, the main rotor blades struck the ground and tailboom before it came to rest on its left side. The tailboom and tail rotor driveshaft were substantially damaged. The helicopter was retained for further examination.

NTSB Probable Cause

The flight instructor’s delayed action to arrest the descending, left pedal turn while maneuvering for a low-altitude hover with the helicopter near the maximum gross weight limitation, which resulted in an impact with the ground and a dynamic rollover.

Full Narrative

On May 3, 2024, about 1600 Pacific daylight time, a Robinson Helicopter R22, N4082J, was substantially damaged when it was involved in an accident near Olympia, Washington. The flight instructor received minor injuries, and the student pilot was uninjured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 91 instructional flight. According to the flight instructor, he and the student pilot were conducting a hover training flight at the Olympia Regional Airport (OLM), Olympia, Washington. Before the accident, the instructor taxied the helicopter about 50 ft agl and 50 kts from a practice area in the southwest corner of the airport toward a practice area near the northeast corner of the airport. As the helicopter approached the second practice area from the southwest, the instructor began a descending pedal turn to the left to realign the helicopter into the wind. During the left pedal turn, the helicopter was in a descent and still traveling in a northerly direction. According to the flight instructor, when the helicopter was about 10 ft agl, he began to raise the collective to arrest the helicopter’s descent, but the helicopter “did not seem to respond” and continued to descend. Subsequently, the right skid struck the ground, the helicopter pitched forward, and the main rotor blades struck the ground and tailboom before the helicopter came to rest on its left side. The helicopter sustained substantial damage to the tailboom and the drivetrain. The flight instructor stated that the helicopter had a maximum gross weight operation limitation of 1,370 lbs, that its weight at takeoff was 1,413 lbs, and that its weight at the time of the accident was 1,382 lbs. He stated that he did not observe any engine rpm drop and estimated that he had added about 85% of the available collective before ground impact. Postaccident examination of the airframe and test run of the engine revealed no evidence of any pre-accident anomaly that would have precluded normal operation. Review of maintenance records show that the most recent maintenance was a 100-hour inspection, performed on April 4, 2024. According to the FAA Helicopter Flying Handbook (FAA-H-8083-21B), “At higher gross weights, the increased power required to hover produces more torque, which means more antitorque thrust is required…. Strong crosswinds and tailwinds may require the use of more tail rotor thrust to maintain directional control. This increased tail rotor thrust absorbs power from the engine, which means there is less power available to the main rotor for the production of lift….” The handbook also stated that, “the following flight characteristics may be expected during maneuvering flight…: [In] left turns, torque increases (more antitorque).”

Flight

Event TypeAccident
Event Time16:00 PDT
Nearest AirportOlympia Regional Airport (0nm N)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftRobinson Helicopter R22 BETA
Tail NumberN4082J
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-B2C · Reciprocating · 160
Seats2

People & Injuries

Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 23 · Second Class · Minor
Crew 2Age 21 · None · None

Conditions

ConditionsVMC
LightDaylight
Wind200° @ 6 kt
Visibility10 sm
CeilingBroken clouds 11000 ft
Temperature / Dew Point64 F / 43 F
Altimeter29.78 inHg
Observation Time16:00
Weather SourceWFAC

Appendix: Source Data