NTSB Identification: LAX88LA095.
The docket is stored on NTSB microfiche number 37745.
Accident occurred Sunday, January 24, 1988 in RIALTO, CA
Probable Cause Approval Date: 11/07/1989
Aircraft: HUGHES 369D, registration: N8366F
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.

A HUGHES 369D COLLIDED WITH TERRAIN WHILE CONDUCTING A PRACTICE AUTOROTATION. THE PIC WAS DEMONSTRATING A DIFFERENT WAY TO MANEUVER THE HELO TO ACCOMPLISH THE AUTO. THE PIC PLANNED TO HOLD 80 KTS A/S UNTIL THE HELO WAS 'RIGHT ON OUR SPOT,' THEN USE A 'BIG FLARE' TO COMPLETE THE MANEUVER. THE PIC ENTERED AUTO, DOVE THE HELO TO ACHIEVE 80 KTS AND STARTED A 180 DEG TURN. THE PIC MAINTAINED THIS FLT ATTITUDE UNTIL THE OTHER PLT 'BECAME CONCERNED' OVER THE HELO'S PROXIMITY TO THE GND. THE ROTOR RPM INDICATED LOW GREEN. THE PIC THEN FLARED. THE SKIDS TOUCHED DOWN APRX 300 FT SHORT OF THE INTENDED TOUCHDOWN SPOT. THE MANUFACTURER 'NOTES' IN THE MANEUVER GUIDE THAT THE HELO SHOULD BE ALIGNED WITH ITS INTENDED TOUCHDOWN PT PRIOR TO PASSING 50 FT OF ALT. IF THIS IS NOT THE CASE A PWR RECOVERY OR TERMINATION WITH PWR SHOULD BE INITIATED. THE WINDS WERE FROM 355 DEG AT 25 KTS WITH PEAK GUSTS TO 42 KTS.

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

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND(CFI)

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

AUTOROTATION..MISJUDGED..PILOT IN COMMAND(CFI)

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

COMPENSATION FOR WIND CONDITIONS..IMPROPER..PILOT IN COMMAND(CFI)


Contributing Factors

TERRAIN CONDITION..DIRT BANK/RISING EMBANKMENT


Contributing Factors

WEATHER CONDITION..HIGH WIND


Contributing Factors

WEATHER CONDITION..GUSTS

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