NTSB Identification: LAX87LA310.
The docket is stored on NTSB microfiche number 36418.
Nonscheduled 14 CFR
Accident occurred Sunday, August 23, 1987 in KAILUA-KONA, HI
Probable Cause Approval Date: 04/24/1989
Aircraft: BELL 206B, registration: N2777R
Injuries: 1 Minor,4 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.

AS THE HELICOPTER WAS CLIMBING OVER RISING TERRAIN AT 300' TO 400' AGL, THE PLT NOTED ALTIMETER & AIRSPEED INDCNS OF 8700' & 60 MPH. AFTER CLIMBING AN ADNL 2 MIN TO APRX 10,000' (12,000' DENSITY ALT), HE NOTICED THE ROTOR RPM WAS BLEEDING OFF. HE MADE A 180 DEG RGT TURN & HEADED DOWN SLOPE, BUT THE HELICOPTER 'CRASH LANDED' AT THE 8500' LEVEL. THE PLT RPRTD THE WINDS WERE FROM THE NW AT 5 KTS & THE TEMP WAS 60 DEG F. APRX 26 MI NW AT KAILUA-KONA, THE 1750 WIND WAS FROM 030 DEG AT 7 KTS. ACCORDING TO WT & BALANCE RECORDS, THE ACFT WAS LOADED TO 3171 LBS (28 LBS UNDER MAX WT LMT).CALCULATIONS SHOWED THE HELICOPTER WOULD HAVE HAD TO CLIMB AT A RATE OF 616'/MIN TO MAINT A 60 MPH CLIMB OVER THE TRRN. ACCORDING TO THE FLT MANUAL, AT 3171 LBS, THE HELICOPTER'S MAX RATE OF CLIMB AT 10,000' WITH 60 DEG AIR TEMP WOULD HAVE BEEN 450'/MIN. ALSO, THE MANUAL SHOWED THE HELICOPTER WAS NOT ABLE TO HOVER OUT OF GROUND EFFECT AT AN ALT & TEMP OF 10,000' & 60 DEG, WHEN THE GROSS WT WAS AT OR ABOVE 2800 LBS. NO PREIMPACT MECH PROBLEMS WERE FND.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

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

ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..HIGH TERRAIN


Contributing Factors

TERRAIN CONDITION..RISING


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

WEATHER CONDITION..UNFAVORABLE WIND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY

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