NTSB Identification: LAX89FA212.
The docket is stored on NTSB microfiche number 40981.
Accident occurred Saturday, June 10, 1989 in RAINBOW VALLEY, CA
Probable Cause Approval Date: 04/15/1991
Aircraft: HUGHES 269C, registration: N58323
Injuries: 2 Fatal.

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.

BEFORE THE FLT, THE STUDENT HELICOPTER PLT RECEIVED A WX BRIEFING, WHICH WAS FORECAST TO BE MARGINAL. HE ELECTED TO FLY, THOUGH INSTRUCTED NOT TO GO IF WX WOULD BE A FACTOR. THE FLT HAD BEEN PLANNED FOR A ROUTE TO BLYTHE, BUT AFTER TAKEOFF, THE PLT PROCEEDED TO PAUMA VALLEY & MADE AN UNAUTHORIZED STOP. A PASSENGER BOARDED THE HELICOPTER & THE PLT TOOK OFF AGAIN. SUBSEQUENTLY, THE HELICOPTER COLLIDED WITH A POWER LINE AS THE PLT WAS FLYING ABOUT 300 FT ABOVE AN INTERSTATE HIGHWAY. IT THEN CRASHED TO THE GROUND & WAS EXTENSIVELY DAMAGED. A WITNESS RPRTD THE CLOUDS WERE LOW, BUT THERE WAS NO FOG. ANOTHER WITNESS RPRTD MIST WAS FALLING. ABOUT 14 MI SW AT OCEANSIDE, THE WX WAS, IN PART: PARTIALLY OBSCURED, 1000 FT OVERCAST, VISIBILITY 5 MILES, WIND FROM 160 DEG AT 4 KTS. NO PREIMPACT MECHANICAL PROBLEM WAS EVIDENT. THE PLT HELD A SINGLE ENGINE LAND AIRPLANE RATING AND WAS RECEIVING FLIGHT INSTRUCTION IN HELICOPTERS.

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

IMPROPER PLANNING/DECISION BY THE PILOT AND HIS INADEQUATE VISUAL LOOKOUT (FAILURE TO SEE AND AVOID THE OBSTRUCTION). FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE WEATHER CONDITIONS, THE PILOT'S DECISION TO FLY IN MARGINAL VFR WEATHER, AND THE TRANSMISSION LINE.

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