NTSB Identification: LAX84FA251.
The docket is stored on NTSB microfiche number 24095.
Accident occurred Sunday, April 08, 1984 in KAMUELA, HI
Aircraft: GRUMMAN AA-5A, registration: N26413
Injuries: 4 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.

THE ACFT WITH 4 OCCUPANTS ON BOARD WAS BEING USED ON A SIGHT-SEEING FLT TO MAUNA LOA VOLCANO. THE PLT WAS IN RADIO CONTACT WITH HILO TOWER FROM 1503 TO 1506 HST. HE INDICATED CONCERN ABOUT THE CLOUDS & DECIDED NOT TO PROCEED TO THE VOLCANO. WHEN THE ACFT FAILED TO RETURN, A SEARCH WAS INITIATED, BUT IT WAS HAMPERED BY RAINS. ON 4/12/84, THE WRECKAGE WAS FOUND ON THE NORTH SLOPE OF MAUNA KEA VOLCANO. AN EXAM REVEALED THE ACFT HAD CRASHED (HDG 320)ON DOWNWARD SLOPING TERRAIN WHILE IN A STEEP DESCENT. THERE WAS VIRTUALLY NO MOVEMENT AFTER IMPACT. THE ACFT WAS ACCORDIONED, 10 FT FROM THE BULKHEAD TO THE EMPENNAGE. NO EVIDENCE OF AN IN-FLT STRUCTURAL FAILURE OR POWER FAILURE WERE FOUND. THE ACFT CLOCK HAD STOPPED AT 3:10.

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

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

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

SPATIAL DISORIENTATION..PILOT IN COMMAND

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

VFR FLIGHT INTO IMC..INADVERTENT..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

FLIGHT INTO KNOWN ADVERSE WEATHER..INITIATED..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..CLOUDS


Contributing Factors

TERRAIN CONDITION..DOWNHILL


Contributing Factors

LACK OF TOTAL INSTRUMENT TIME..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..HIGH TERRAIN


Contributing Factors

WEATHER CONDITION..LOW CEILING


Contributing Factors

WEATHER CONDITION..RAIN

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