NTSB Identification: LAX92LA199.
The docket is stored on NTSB microfiche number 46199.
Accident occurred Monday, May 04, 1992 in SUN VALLEY, CA
Probable Cause Approval Date: 08/13/1993
Aircraft: ROBINSON R-22B, registration: N4081P
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE INSTRUCTOR PILOT SAID THAT HE HAD FLOWN THE HELICOPTER ON THE FLIGHT PRIOR TO THE ACCIDENT SESSION FOR ABOUT 1.2 HOURS. THE HELICOPTER BEGAN THAT FLIGHT WITH FULL FUEL TANKS AND IT WAS NOT REFUELED AFTER LANDING. THE INSTRUCTOR STATED THAT HE PERFORMED THE PREFLIGHT INSPECTION WITH THE STUDENT ON THE ACCIDENT FLIGHT AND VISUALLY LOOKED INSIDE THE FUEL TANK AND DETERMINED THAT ABOUT ONE HOUR AND FORTY MINUTES OF FUEL WAS ON BOARD. HE SAID THAT HE DID NOT USE A MEASURING DEVICE TO QUANTIFY THE AMOUNT OF FUEL IN THE TANK, BUT RATHER VISUALLY ESTIMATED THAT THE AMOUNT HE OBSERVED MATCHED THE FUEL GAGE. AFTER DEPARTURE FROM BURBANK THE FLIGHT PROCEEDED TO THE LOCAL PRACTICE AREA WHERE THE ONE HOUR DUAL STUDENT WAS GIVEN A LESSON ON PRIMARY FLIGHT MANEUVERS. THE FLIGHT WAS ON APPROACH TO THE BURBANK AIRPORT AFTER ONE HOUR AND TWELVE MINUTES WHEN THE LOW FUEL LEVEL WARNING LIGHT ILLUMINATED. THE INSTRUCTOR NOTED THAT THE ENGINE QUIT IMMEDIATELY THEREAFTER AND HE EXECUTED AN AUTO ROTATION TO A CITY PARK. THE HELICOPTER LANDED HARD, BENDING THE TAIL BOOM. NO FUEL WAS FOUND IN THE TANK AFTER THE ACCIDENT.

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

1) FUEL EXHAUSTION DUE TO IMPROPER PREFLIGHT PLANNING BY THE CFI AND HIS FAILURE TO REFUEL THE AIRCRAFT PRIOR TO DEPARTURE ON THE ACCIDENT FLIGHT, AND 2) THE CFI'S MISJUDGEMENT OF THE LANDING FLARE TIMING DURING THE AUTO ROTATION.

Index for May1992 | Index of months