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NTSB Report
February 28, 1993 · Huddleston-Bell 47G2 · N37870
Rio Grande, PR
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 28, 1993
Injury Outcomes
2 injuries (2 minor injuries)
Location
Rio Grande, PR
Aircraft
Huddleston-Bell 47G2
Tail Number
N37870
Operator
Perez Santiago T
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MIA93LA076
THE STUDENT PLT REPORTED THAT DURING CRUISE FLT, HE NOTED A STRONG VIBRATION FROM THE HELICOPTER AND A TENDENCY FOR THE HELICOPTER TO GO TO THE RIGHT. HE EXECUTED A 180-DEGREE TURN AND WHILE DESCENDING FOR A PRECAUTIONARY LANDING TO A CONCRETE PAD, THE MAIN ROTOR BLADES COLLIDED WITH A TREE. THE HELICOPTER THEN DESCENDED, COLLIDED WITH THE GROUND, AND ROLLED ONTO ITS RT SIDE. NO DETERMINATION COULD BE MADE AS TO THE REASON FOR THE REPORTED VIBRATION OR YAWING TENDENCY. ACCORDING TO AN FAA INSPECTOR WHO EXAMINED THE HELICOPTER AT THE ACCIDENT SITE, AN OPEN FIELD WAS ADJACENT TO THE CONCRETE PAD AND A PASSENGER WAS IN THE HELICOPTER WHEN IT CRASHED.
NTSB Probable Cause
POOR IN-FLIGHT PLANNING BY THE PILOT-IN-COMMAND. CONTRIBUTING TO THE ACCIDENT WAS THE FLIGHT'S LACK OF TOTAL EXPERIENCE.
Full Narrative
THE STUDENT PLT REPORTED THAT DURING CRUISE FLT, HE NOTED A STRONG VIBRATION FROM THE HELICOPTER AND A TENDENCY FOR THE HELICOPTER TO GO TO THE RIGHT. HE EXECUTED A 180-DEGREE TURN AND WHILE DESCENDING FOR A PRECAUTIONARY LANDING TO A CONCRETE PAD, THE MAIN ROTOR BLADES COLLIDED WITH A TREE. THE HELICOPTER THEN DESCENDED, COLLIDED WITH THE GROUND, AND ROLLED ONTO ITS RT SIDE. NO DETERMINATION COULD BE MADE AS TO THE REASON FOR THE REPORTED VIBRATION OR YAWING TENDENCY. ACCORDING TO AN FAA INSPECTOR WHO EXAMINED THE HELICOPTER AT THE ACCIDENT SITE, AN OPEN FIELD WAS ADJACENT TO THE CONCRETE PAD AND A PASSENGER WAS IN THE HELICOPTER WHEN IT CRASHED.
Flight
Event TypeAccident
Event Time17:00 AST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHuddleston-Bell 47G2
Tail NumberN37870
Aircraft CategoryHeli
DamageSubstantial
OperatorPerez Santiago T
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-435-A1D · Reciprocating · 260
Seats3
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 50 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind260° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point66 F
Altimeter29.00 inHg
Observation Time20:52
Weather SourceWFAC