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NTSB Report
March 10, 2018 · Hughes 269 A · N9020M
Jacksonville, FL
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
March 10, 2018
Injury Outcomes
No injuries (1 uninjured)
Location
Jacksonville, FL
Aircraft
Hughes 269 A (1964)
Tail Number
N9020M
Operator
Skypro Industries
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA18CA159
The helicopter pilot reported that he entered a practice autorotation and intended to terminate the maneuver to a hover. During the flare phase of the maneuver, he allowed the rotor rpm to decay. He increased collective and subsequently added power with throttle. The nose of the helicopter yawed to the right and simultaneously the fuselage rolled to the left. He applied left pedal, but the left skid struck rising terrain and the helicopter entered dynamic rollover. The helicopter sustained substantial damage to the main rotor drive system and the tail rotor drive system. The pilot reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
NTSB Probable Cause
The pilot’s failure to maintain rotor rpm during a practice autorotation, which resulted in ground contact and a dynamic rollover.
Full Narrative
The helicopter pilot reported that he entered a practice autorotation and intended to terminate the maneuver to a hover. During the flare phase of the maneuver, he allowed the rotor RPM to decay. He increased collective and subsequently added power with throttle. The nose of the helicopter yawed to the right and simultaneously the fuselage rolled to the left. He applied left pedal, but the left skid struck rising terrain and the helicopter entered dynamic rollover. The helicopter sustained substantial damage to the main rotor drive system and the tail rotor drive system. The pilot reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
Flight
Event TypeAccident
Event Time14:30 EST
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 269 A
Tail NumberN9020M
Aircraft CategoryHeli
DamageSubstantial
OperatorSkypro Industries
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-B1A · Reciprocating · 180
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 60 · First Class · None
Conditions
ConditionsVMC
LightDaylight
Wind140° @ 7 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F / 43 C
Altimeter30.03 inHg
Observation Time19:53
Weather SourceWFAC