NTSB Identification: ATL82FA035
14 CFR Part 91: General Aviation
Accident occurred Sunday, January 17, 1982 in PICAYUNE, MS
Probable Cause Approval Date: 01/17/1983
Aircraft: BEECH F50, registration: N654T
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.

THE AIRCRAFT TOOK OFF DURING DARKNESS WITH A SINGLE-ENGINE PILOT IN THE PILOT-IN-COMMAND (PIC) POSITION AND A MULTI-ENGINE INSTRUCTOR PILOT IN THE COPILOT (CP) POSITION. THE PIC HAD A FULL SET OF CONTROLS (WHEN THE YOKE WAS ON HIS SIDE); HOWEVER, THERE WERE NO RUDDER PEDALS FOR THE CP. AFTER TAKEOFF, THE PLANE CRASHED IN A NOSE LOW, 90 DEG LEFT BANK, ATTITUDE. A WITNESS REPORTED THAT THE PROPELLERS SOUNDED LIKE THEY WERE OUT OF PITCH DURING TAKEOFF. THE LANDING GEAR WAS FOUND IN THE EXTENDED POSITION. THE YOKE WAS FOUND ON THE CP SIDE. THE LEFT PROPELLER BLADES WERE BENT AFT AND 2 OF THE BLADES WERE FOUND IN THE NORMAL HIGH PITCH POSITION. AN EXAMINATION OF THE LEFT ENGINE REVEALED 6 OF 6 CYLINDERS HAD LOW COMPRESSION. THE SUPERCHARGER WAS WORN, THE IMPELLER PARTIALLY DISINTEGRATED FROM RUBBING ON ITS HOUSING, AND THE IMPELLER DRIVE SHAFT WAS BENT AND HAD BEEN OVERHEATED. THE AIRCRAFT DID NOT HAVE A CURRENT ANNUAL INSPECTION. THERE WAS EVIDENCE THE PIC WAS UNDER PRESSURE TO COMPLETE THE ITINERARY.

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

ENG ASSEMBLY,BLOWER/IMPELLER/INTEGRAL SUPERCHARGER..FAILURE,PARTIAL

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

FLUID,OIL..STARVATION

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

ENG ASSEMBLY,BLOWER/IMPELLER/INTEGRAL SUPERCHARGER..FAILURE,TOTAL

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:

QUALIFICATION..PILOT IN COMMAND

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

LACK OF TOTAL EXPERIENCE IN KIND OF AIRCRAFT..PILOT IN COMMAND

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:

RELINQUISHING OF CONTROL..IMPROPER..PILOT IN COMMAND


Contributing Factors

ENGINE ASSEMBLY,RING..WORN


Contributing Factors

MAINTENANCE,ANNUAL INSPECTION..NOT PERFORMED..COMPANY/OPERATOR MANAGEMENT


Contributing Factors

ACFT/EQUIP,INADEQUATE COMPLIANCE DETERMINATION..COMPANY/OPERATOR MANAGEMENT


Contributing Factors

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..INITIATED..PILOT IN COMMAND


Contributing Factors

PRESSURE..PILOT IN COMMAND


Contributing Factors

LIGHT CONDITION..DARK NIGHT


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