NTSB Identification: ATL84FA203.
The docket is stored on NTSB microfiche number 25426.
Accident occurred Wednesday, June 20, 1984 in CUMMING, GA
Aircraft: Camair Aircraft Corp. 480, registration: N231
Injuries: 2 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.

ACCORDING TO WITNESSES, THE ACFT CROSSED A HIGHWAY AFTER TAKING OFF, ENTERED A LEFT TURN, DESCENDED & PULLED BACK UP, THEN WENT OUT OF CONTROL & CRASHED. ONE WITNESS INDICATED THAT THE ACFT ENTERED A SPIN PRIOR TO CRASHING. AN EXAM OF THE WRECKAGE SHOWED EVIDENCE THAT THE RIGHT ENG WAS PROVIDING POWER. THE LEFT PROP WAS FOUND IN A FEATHERED POSITION, BUT THE COCKPIT CONTROLS WERE NOT POSITIONED TO FEATHER THE LEFT PROP. AN EXAM OF THE LEFT ENG REVEALED THAT THE #5 CONNECTING ROD HAD FAILED FROM FATIGUE. THE FATIGUE HAD ORIGINATED IN AN AREA WHERE THE ROD HAD BEEN BENT. THERE WAS EVIDENCE OF PREVIOUS COLUMN BENDING OF THE ROD (POSSIBLY FROM A HYDROSTATIC LOCK). THE LEFT PRIMER WAS FOUND BROKEN.

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

EMERGENCY PROCEDURE..IMPROPER..PILOT IN COMMAND

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

PROPELLER FEATHERING..NOT PERFORMED..PILOT IN COMMAND

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

ENGINE ASSEMBLY,CONNECTING ROD..FATIGUE

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

AIRSPEED(VMC)..NOT MAINTAINED..PILOT IN COMMAND

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

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

ENGINE ASSEMBLY,CONNECTING ROD..PREVIOUS DAMAGE

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