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NTSB Report
February 6, 2009 · Robinson Helicopter R22 BETA · N234LA
Cypress, TX
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
February 6, 2009
Injury Outcomes
No injuries (2 uninjured)
Location
Cypress, TX
Aircraft
Robinson Helicopter R22 BETA
Tail Number
N234LA
Operator
Helicopter Services
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN09CA157
While performing a 180-degree autorotation, the student pilot raised the collective in order to maintain the helicopter's rpms within normal parameters. At approximately 250 feet above ground level, the rotor rpm was allowed to decay to 95% at which time the helicopter began to sink. The lowest observed rpm was 85%. The certified flight instructor took control of the helicopter could not recover the helicopter prior to an impact with terrain. The helicopter landed hard and rolled onto its left side. Substantial crushing damage was sustained to the fuselage. Winds at the time of the accident were 190 degrees at 14 knots gusting to 30 knots.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Prop/rotor parameters-Not attained/maintained - C
Full Narrative
While performing a 180-degree autorotation, the student pilot raised the collective in order to maintain the rotor rpms within normal parameters. At approximately 250 feet above ground level, the rotor rpm was allowed to decay to 95% at which time the helicopter began to sink. The lowest observed rpm was 85%. The certified flight instructor took control of the helicopter, but could not recover prior to impact with terrain. The helicopter landed hard and rolled onto its left side. Substantial crushing damage was sustained to the fuselage. Winds at the time of the accident were 190 degrees at 14 knots gusting to 30 knots.
Flight
Event TypeAccident
Event Time10:33 CST
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson Helicopter R22 BETA
Tail NumberN234LA
Aircraft CategoryHeli
DamageSubstantial
OperatorHelicopter Services
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360 SERIES · Reciprocating · 180
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 31 · Second Class · None
Crew 2Age 31 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind170° @ 14 kt, gusting 30 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point54
Altimeter30.35 inHg
Observation Time16:53
Weather SourceWFAC