Individually Owned: 151,845
Corporate Owned: 143,699
John Wayne Airport
Aircraft Accident/Incident Report
Santa Ana, California 92626
Friday, April 14, 1989 18:33 PDT
NTSB Narrative Summary Released at Completion of Accident
AFTER THE CARGO WAS LOADED, AND AS THE PILOT GROUND TAXIED OVER A CONCRETE DRAINAGE DEPRESSION IN THE RAMP, THE LEFT MAIN LANDING GEAR SEPARATED FROM THE GEAR TUBE AND THE HELICOPTER ROLLED OVER. METALLURGICAL EXAMINATION OF THE FAILED LANDING GEAR STRUT REVEALED PRE-EXISTING FATIGUE CRACKS IN THE INSIDE THE GEAR LEG EXTENDING FROM MULTIPLE ORIGINS. IN ADDITION, THERE WAS CORROSION PITTING AND REMNANT TOOLING MARKS ON THE SURFACE FINISH OF THE LOWER GEAR TUBE INSIDE DIAMETER. THE PITTED AND CORRODED CONDITION OF THE TUBE INSIDE DIAMETER INDICATED THAT ENVIRONMENTAL INTRUSION OF THE CORROSION PREVENTATIVE MATERIAL MAY HAVE OCCURRED DURING SERVICE. THE AIRCRAFT WAS 951 POUNDS OVER CERTIFICATED MAXIMUM GROSS WEIGHT.
NTSB Probable Cause Narrative
FAILURE OF THE LANDING GEAR RESULTING FROM EXCESSIVE LOADING DURING GROUND OPERATIONS, AND FATIGUE CRACKING.
Event Information
| Type of Event | Accident |
| Event Date | 4/14/1989 |
| Event Day of the Week | Friday |
| Time of Event | 1833 |
| Event Time Zone | Pacific Daylight Time |
| Event City | SANTA ANA |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 92626 |
| Event Date Year | 1989 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | JOHN WAYNE |
| Event Location Nearest Airport ID | SNA |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 54 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1855 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | SNA |
| Elevation of weather observation facility | 54 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 25000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Partial Obscuration |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 5 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | 13 |
| Wind Direction (degrees magnetic) | 220 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 12 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 100 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 1 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2172 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 14 1989 12:00AM |
| NTSB Notification Time | 1910 |
| Fiche Number and/or location -used to find docket information | 41849 |
| Date of most recent change to record | Dec 13 2000 12:36PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1168U |
| NTSB Number | LAX89FA160 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | SIKORSKY |
| Aircraft Model | S-58ET |
| Aircraft Series Identifier | S-58ET |
| Aircraft Serial Number | 58-1070 |
| Certified Max Gross Weight | 13000 |
| 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 | 2 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Apr 14 1989 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 15715 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | ARIS HELICOPTERS, LTD |
| Aircraft Owner Street Address | 1138 COLEMAN AVE. |
| Aircraft Owner City | SAN JOSE |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 95110 |
| 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 | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | External Load |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | SNA |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1833 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | LAX |
| Destination City | LOS ANGELES |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Taxi |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| 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 | -- |