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NTSB Report
August 25, 1988 · Brantly Helicopter B-2B · N2264U
Sallisaw, OK
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 25, 1988
Injury Outcomes
No injuries (2 uninjured)
Location
Sallisaw, OK
Aircraft
Brantly Helicopter B-2B
Tail Number
N2264U
Operator
Robert D Terrill
Injuries
None
Aircraft Damage
Substantial
NTSB Number
FTW88LA152
ACFT EXPERIENCED A HARD LANDING AND ROLLED OVER FOLLOWING A LOSS OF CONTROL IN A HOVER. PLT DELAYED CUTTING THE THROTTLE IN ORDER TO CLEAR A DITCH. INVESTIGATION REVEALED THAT THE TAIL ROTOR DRIVESHAFT COUPLING RETAINING SCREW HAD SEPARATED. THE SEPARATION ALLOWED A DISCONNECT IN THE TAIL ROTOR DRIVESHAFT AND LOSS OF TAIL ROTOR DRIVE. THE REASON FOR THE SCREW FAILURE WAS NOT DETERMINED. ACFT HAD JUST BEEN RETURNED TO SERVICE FOLLOWING EXTENSIVE REPAIRS FOR DAMAGE SUSTAINED IN A PREVIOUS HARD LANDING.
Full Narrative
ACFT EXPERIENCED A HARD LANDING AND ROLLED OVER FOLLOWING A LOSS OF CONTROL IN A HOVER. PLT DELAYED CUTTING THE THROTTLE IN ORDER TO CLEAR A DITCH. INVESTIGATION REVEALED THAT THE TAIL ROTOR DRIVESHAFT COUPLING RETAINING SCREW HAD SEPARATED. THE SEPARATION ALLOWED A DISCONNECT IN THE TAIL ROTOR DRIVESHAFT AND LOSS OF TAIL ROTOR DRIVE. THE REASON FOR THE SCREW FAILURE WAS NOT DETERMINED. ACFT HAD JUST BEEN RETURNED TO SERVICE FOLLOWING EXTENSIVE REPAIRS FOR DAMAGE SUSTAINED IN A PREVIOUS HARD LANDING.
Flight
Event TypeAccident
Event Time12:10 CDT
Nearest AirportSallisaw Muni (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBrantly Helicopter B-2B
Tail NumberN2264U
Aircraft CategoryHeli
DamageSubstantial
OperatorRobert D Terrill
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VIO-360-A1A · Reciprocating · 180
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 43 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind350° @ 4 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point64 F
Altimeter29.00 inHg
Observation Time16:50
Weather SourceWFAC