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NTSB Report
May 6, 1984 · Bell 47D-1 · N13012
Ridge Farm, IL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
May 6, 1984
Injury Outcomes
No injuries (1 uninjured)
Location
Ridge Farm, IL
Aircraft
Bell 47D-1
Tail Number
N13012
Operator
Ag Air
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI84LA181
THE HELICOPTER ROLLED OVER AFTER A HARD LANDING FOLLOWING LOSS OF ROTOR RPM. THE PLT REPORTED THAT DURING INITIAL CLIMB AT ABOUT 300 FT AGL THE ROTOR DECREASED ABOUT 500 RPM. HE TRIED TO REGAIN ROTOR RPM UNTIL ABOUT 100 FT AGL AND THEN TRIED AN AUTOROTATION. UPON LANDING THE ACFT ROLLED OVER. POST ACCIDENT INVESTIGATION REVEALED NO MECHANICAL DISCREPENCIES WITH THE ACFT.
Full Narrative
THE HELICOPTER ROLLED OVER AFTER A HARD LANDING FOLLOWING LOSS OF ROTOR RPM. THE PLT REPORTED THAT DURING INITIAL CLIMB AT ABOUT 300 FT AGL THE ROTOR DECREASED ABOUT 500 RPM. HE TRIED TO REGAIN ROTOR RPM UNTIL ABOUT 100 FT AGL AND THEN TRIED AN AUTOROTATION. UPON LANDING THE ACFT ROLLED OVER. POST ACCIDENT INVESTIGATION REVEALED NO MECHANICAL DISCREPENCIES WITH THE ACFT.
Flight
Event TypeAccident
Event Time20:02 CDT
Nearest Airport5nm NW
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47D-1
Tail NumberN13012
Aircraft CategoryHeli
DamageSubstantial
OperatorAg Air
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · 6 VS-335-A · Reciprocating · 225
Seats3
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 27 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility12 sm
CeilingOvercast 15000 ft
Temperature / Dew Point63 F / 41 C
Altimeter29.00 inHg
Observation Time00:45
Weather SourceWFAC