NTSB Identification: LAX88FA033.
The docket is stored on NTSB microfiche number 38460.
Accident occurred Thursday, November 19, 1987 in RIALTO, CA
Probable Cause Approval Date: 09/01/1989
Aircraft: BELL 206L-3, registration: N66WL
Injuries: 1 Serious,1 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE PILOT LOST CONTROL OF THE RECENTLY PAINTED HELICOPTER DURING THE TAKEOFF. THE PAINT SHOP PERSONNEL HAD MOVED THE HELO TO A AIRPLANE PARKING SPOT. THE HELO SKIDS STRADDLED THE TIE-DOWN CHAINS. TWO WING TIE-DOWN CHAINS WERE INCORRECTLY ATTACHED TO THE RIGHT LANDING GEAR SKID. ONE WITNESS INDICATED THAT HE WALKED AROUND THE HELO EXAMINING THE NEW PAINT BEFORE THE ARRIVAL OF THE PLT AND PAX. HE STATED THAT HE DID NOT NOTICE ANY TIE-DOWN CHAINS ON THE ACFT. THE PLT DID NOT NOTICE THE TIE-DOWN CHAINS DURING THE PREFLIGHT CHECK AND DID NOT REMOVE THEM. THE CHAINS WERE ATTACHED WITHOUT TENSION. AS THE HELO CAME TO A HOVER, THE SLACK WAS TAKEN UP. WITH THE RIGHT SKID TUBE TETHERED, THE HELO ROLLED RIGHT ALLOWING THE MAIN ROTOR BLADES TO STRIKE THE GROUND. AC 20-35C STATES, 'FASTEN THE TIE-DOWN ROPES TO THE FUSELAGE MOORING POINTS AND EXTEND THEM TO THE GROUND MOORING ANCHORS'. THE CHAINS WERE DARK BROWN IN COLOR AND DID NOT CLEARLY CONTRAST WITH THE ASPHALT SURFACE.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

TIE DOWN..IMPROPER..OTHER MAINTENANCE PERSONNEL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

TIE DOWN..NOT IDENTIFIED..PILOT IN COMMAND


Contributing Factors

AIRCRAFT PERFORMANCE,TAKEOFF CAPABILITY..MOVEMENT RESTRICTED

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