Friday, June 04, 2021

Loss of Tail Rotor Effectiveness: (Hughes) TH55A/269A, N41G; accident occurred June 03, 2021 at Monroe Regional Airport (KMLU), Ouachita Parish, Louisiana

Aviation Accident Final Report - National Transportation Safety Board 

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity: 
Federal Aviation Administration / Flight Standards District Office; Baton Rouge, Louisiana

Investigation Docket - National Transportation Safety Board:
Location: Monroe, Louisiana
Accident Number: CEN21LA253
Date and Time: June 3, 2021, 12:15 Local
Registration: N41G
Aircraft Damage: Substantial
Defining Event: Loss of tail rotor effectiveness 
Injuries: 2 None
Flight Conducted Under: Part 91: General aviation - Personal


The pilot reported that on short final to land, the helicopter lost tail rotor authority and the helicopter began an uncommanded right yaw. He attempted to recover and landed on a grass area which resulted in a hard landing. The fuselage and skids sustained substantial damage. The pilot noted on his report of the accident that there were no mechanical failures or malfunctions of the helicopter that would have precluded normal operations.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot’s failure to maintain yaw control during landing which resulted in a loss of tail rotor effectiveness.


Personnel issues Aircraft control - Pilot
Aircraft Yaw control - Not attained/maintained

Factual Information

History of Flight

Approach-VFR pattern final Loss of tail rotor effectiveness (Defining event)
Landing Hard landing

Pilot Information

Certificate: Commercial; Private 
Age: 34, Male
Airplane Rating(s): Single-engine land
Seat Occupied: Right
Other Aircraft Rating(s): Helicopter
Restraint Used: 4-point
Instrument Rating(s): Airplane; Helicopter 
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed:
Medical Certification: Class 1 Without waivers/limitations
Last FAA Medical Exam: January 4, 2021
Occupational Pilot: Yes 
Last Flight Review or Equivalent:
Flight Time: 2620 hours (Total, all aircraft), 12 hours (Total, this make and model), 2210 hours (Pilot In Command, all aircraft), 55 hours (Last 90 days, all aircraft), 21 hours (Last 30 days, all aircraft), 1 hours (Last 24 hours, all aircraft)

Aircraft and Owner/Operator Information

Registration: N41G
Model/Series: TH55A/269A 
Aircraft Category: Helicopter
Year of Manufacture: 1969
Amateur Built:
Airworthiness Certificate: Normal 
Serial Number: 291097(67-16990)
Landing Gear Type: Skid 
Seats: 2
Date/Type of Last Inspection: July 12, 2020 Annual
Certified Max Gross Wt.: 1670 lbs
Time Since Last Inspection: 77 Hrs 
Engines: 1 Reciprocating
Airframe Total Time: 10324 Hrs as of last inspection
Engine Manufacturer: Lycoming
ELT: Installed, not activated 
Engine Model/Series: HIO-360-B1A
Registered Owner: 
Rated Power: 180 Horsepower
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC) 
Condition of Light: Day
Observation Facility, Elevation: KMLU,79 ft msl
Distance from Accident Site: 0 Nautical Miles
Observation Time: 12:23 Local 
Direction from Accident Site: 0°
Lowest Cloud Condition: Clear
Visibility: 10 miles
Lowest Ceiling: None 
Visibility (RVR):
Wind Speed/Gusts: / 
Turbulence Type Forecast/Actual:  /
Wind Direction:
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 30.02 inches Hg
Temperature/Dew Point: 27°C / 18°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: Monroe, LA 
Type of Flight Plan Filed: None
Destination: Monroe, LA
Type of Clearance: VFR
Departure Time: 
Type of Airspace: Class D

Airport Information

Runway Surface Type:
Airport Elevation: 79 ft msl 
Runway Surface Condition: Dry
Runway Used: 
IFR Approach: None
Runway Length/Width:
VFR Approach/Landing: Traffic pattern

Wreckage and Impact Information

Crew Injuries: 1 None
Aircraft Damage: Substantial
Passenger Injuries: 1 None
Aircraft Fire: None
Ground Injuries: 
Aircraft Explosion: None
Total Injuries: 2 None
Latitude, Longitude: 32.510861,-92.037667

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