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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

August 3, 1992 · Hughes 369HS · N501FH

Monroe, LA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
August 3, 1992
Injury Outcomes
2 injuries (2 minor injuries)
Location
Monroe, LA
Aircraft
Hughes 369HS
Tail Number
N501FH
Operator
Coffman Leslie R
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW92LA199

THE PURPOSE OF THE FLIGHT WAS TO TRACK THE MAIN ROTOR SYSTEM. THE DEPARTURE WAS TO THE SOUTHEAST AND THE WINDS WERE FROM THE WEST AT 5 KNOTS. DURING THE INITIAL CLIMB AT APPROXIMATELY 100 FEET AGL AND APPROXIMATELY 35 KNOTS AIRSPEED, A TOTAL LOSS OF POWER OCCURRED. THE PILOT INITIATED AN AUTOROTATION TO THE GRASS ABEAM A RUNWAY. DURING THE FLARE THE PILOT DID NOT MAINTAIN ADEQUATE ROTOR RPM AND THE HELICOPTER LANDED HARD, COLLAPSING THE SKID GEAR AND SEVERING THE TAIL BOOM. THE ENGINE WAS TEST RUN AT THE MANUFACTURER'S FACILITY WITH NO ANOMALIES NOTED. ADDITIONAL TESTS ON THE ENGINE'S RELATED SYSTEMS DID NOT REVEAL THE REASON FOR THE LOSS OF POWER.

NTSB Probable Cause

THE PILOT'S FAILURE TO MAINTAIN ADEQUATE ROTOR RPM DURING AUTOROTATION. FACTORS WERE THE TAILWIND AND THE POWER LOSS FOR UNDETERMINED REASONS.

Full Narrative

THE PURPOSE OF THE FLIGHT WAS TO TRACK THE MAIN ROTOR SYSTEM. THE DEPARTURE WAS TO THE SOUTHEAST AND THE WINDS WERE FROM THE WEST AT 5 KNOTS. DURING THE INITIAL CLIMB AT APPROXIMATELY 100 FEET AGL AND APPROXIMATELY 35 KNOTS AIRSPEED, A TOTAL LOSS OF POWER OCCURRED. THE PILOT INITIATED AN AUTOROTATION TO THE GRASS ABEAM A RUNWAY. DURING THE FLARE THE PILOT DID NOT MAINTAIN ADEQUATE ROTOR RPM AND THE HELICOPTER LANDED HARD, COLLAPSING THE SKID GEAR AND SEVERING THE TAIL BOOM. THE ENGINE WAS TEST RUN AT THE MANUFACTURER'S FACILITY WITH NO ANOMALIES NOTED. ADDITIONAL TESTS ON THE ENGINE'S RELATED SYSTEMS DID NOT REVEAL THE REASON FOR THE LOSS OF POWER.

Flight

Event TypeAccident
Event Time16:13 CDT
Nearest AirportMonroe Regional (0nm)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftHughes 369HS
Tail NumberN501FH
Aircraft CategoryHeli
DamageSubstantial
OperatorCoffman Leslie R
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20 · Turboshaft · 317
Seats5

People & Injuries

Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 43 · First Class

Conditions

ConditionsVMC
LightDaylight
Wind250° @ 5 kt
Visibility10 sm
CeilingNone
Altimeter29.00 inHg
Weather SourcePILO

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Appendix: Source Data