Aircraft Accident/Incident Report

Honolulu, Hawaii 96830
Tuesady, August 10, 1993 18:06 HST

NTSB Narrative Summary Released at Completion of Accident

ABOUT 10 MI FROM THE DESTINATION, THE PILOT RADIOED APPROACH CONTROL TO ENTER THE TCA. HE WAS GIVEN A TRANSPONDER CODE BY THE CONTROLLER, BUT DID NOT ACKNOWLEDGE THE TRANSMISSION. WITNESSES NEAR THE ACCIDENT SITE REPORTED HEARING A LOUD 'EXPLOSION', OR A METAL TO METAL SOUND, AND THEN OBSERVED THE HELICOPTER IN AN UNCONTROLLED DESCENT. ONE WITNESSES SAID THE ROTOR DISK TILTED AND STRUCK THE AIRFRAME. POST-CRASH EXAMINATION REVEALED THAT ONE MAIN ROTOR BLADE HAD ENTERED THE FORWARD LEFT SIDE OF THE CABIN.

NTSB Probable Cause Narrative

A DIVERGENCE OF THE MAIN ROTOR FROM ITS NORMAL PLANE OF ROTATION FOR AN UNDETERMINED REASON(S) WHICH RESULTED IN ROTOR CONTACT WITH THE AIRFRAME.

Event Information

Type of Event Accident
Event Date 8/10/1993
Event Day of the Week Tuesday
Time of Event 1806
Event Time Zone Hawaii Standard Time
Event City HONOLULU
Event State HAWAII
Event Country --
Zipcode of the event site 96830
Event Date Year 1993
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1755 Hawaii Standard Time
Direction of event from weather observation facility (degrees) 280
Weather Observation Facility ID HNL
Elevation of weather observation facility 10
Distance of event from weather observation facility (units?) 8
Time Zone of the weather observation HST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 28
Dew Point at event time (in degress fahrenheit) 19
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Unknown
Wind Speed (knots) 16
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1420
NTSB Notification Source --
NTSB Notification Date Aug 10 1993 12:00AM
NTSB Notification Time 2200
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:34PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4017J
NTSB Number LAX93FA318
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name ROBINSON
Aircraft Model R-22 BETA
Aircraft Series Identifier R-22 BETA
Aircraft Serial Number 1443
Certified Max Gross Weight 1370
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 28 1993 12:00AM
Airframe hours since last inspection 5
Airframe Hours 1816
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name OFFSHORE HELICOPTERS, INC.
Aircraft Owner Street Address P. O. BOX 89124
Aircraft Owner City HONOLULU
Aircraft Owner State HI
Aircraft Owner Country
Aircraft Owner Zipcode 96830
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code LNY
Departure City LANAI
Departure State HI
Departure Country
Departure Time 1725
Departure Time Zone HST
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --