NTSB Identification: LAX84FA483.
The docket is stored on NTSB microfiche number 26099.
Nonscheduled 14 CFR
Accident occurred Monday, September 17, 1984 in LONG BEACH, CA
Aircraft: BELL 206B, registration: N7111J
Injuries: 1 Minor,1 Uninjured.

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 EXPERIENCED A POWER LOSS DURING FLARE FOR LANDING. THE PLT PULLED COLLECTIVE TO SOFTEN THE TOUCHDOWN FROM 30 FTAGL BUT THE LANDING WAS HARD. POST ACCIDENT EXAMINATION OF THE ENGINE SHOWED A FAILURE OF THE #1 TURBINE DISC. LAB EXAM OF THE DISC SHOWED FAILURE FROM OVERHEATING AND FATIGUE. AN AD WAS IN EXISTANCE WITH THE PURPOSE OF PREVENTIG AFTER FIRES FROM INCOMPLETE FUEL CUT OFF DURING ENGINE SHUTDOWN BY ADJUSTING THE FUEL CONTROL QUADRANT TO READ MINUS 2 DEGREESWITH THE THROTTLE AGAINST THE MINIMUM STOP. INVESTIGATION SHOWED THE FUEL CONTROL QUADRANT ON THE ACCIDENT ACFT READ '0'DEGREES WITH THE THROTTLE LEVER AGAINST THE MINIMUM STOP.

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

TURBINE ASSEMBLY,TURBINE WHEEL..FATIGUE

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

MAINTENANCE,COMPLIANCE WITH AD..NOT PERFORMED..COMPANY MAINTENANCE PERSONNEL

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

TURBINE ASSEMBLY,TURBINE WHEEL..FAILURE,TOTAL


Contributing Factors

TURBINE ASSEMBLY,TURBINE WHEEL..OVERTEMPERATURE

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