- Date
- June 20, 1991, 16:30 local (21:30 UTC)
- Place
- Corsicana, TX
- Injuries
- 6 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N4582BSikorsky 58H
- Weather
- Visual (VMC) · Day
- Status
- Completed · report March 31, 1993
- Report
- Approved by Office Director
- FAA report
- 19910620022839A
- Case key
- 23351
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Failure of the magneto. Factors were the helicopter's position over water, the tailwind, and the inadequate main rotor RPM prior to touchdown.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The helicopter was in cruise flight over a lake when an engine power loss occurred. The pilot entered autorotation and maneuvered downwind toward the shore line. The helicopter landed hard and the right main gear strut collapsed, penetrating the fuselage. Engine examination showed a total failure of the magneto. It had recently undergone repair and inspection at an engine shop.
Aircraft
- Registration
- N4582B
- Reported as
- Sikorsky 58H
- Category
- Helicopter
- Serial number
- 14-8079
- Engine
- Wright R-1820-84C, 1,525 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Business · Part 91
- Operator
- Bradford S. Ladue
- Registered owner
- Bradford S. Ladue
- Last inspection
- 100 hour · January 2, 2000
- Departed
- HQZ · Mesquite, TX
- Destination
- SPX · Houston, TX
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 39
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Flight hours
- 16,112 total · 3,360 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 210° at 11 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 90 °F, dew point -0 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.