NTSB Identification: FTW83FA259.
The docket is stored on NTSB microfiche number 22663.
Nonscheduled 14 CFR
Accident occurred Wednesday, June 01, 1983 in HARVEY, LA
Aircraft: CESSNA 180J, registration: N52072
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.

A NAVIGABLE WATERWAY, HARVEY CANAL, WAS BEING USED AS A SEAPLANE BASE. IN THAT AREA, A SET OF POWER LINES WERE SUSPENDED OVER THE CANAL BY 2 TALL TOWERS. THE LOWEST LINE OVER THE CANAL WAS 160 FT ABOVE THE CANAL SURFACE, BUT THE LINES DROPPED TO HEIGHTS OF DOWN TO 60 FT OVER LAND. THE NORMAL PROCEDURE FOR A SOUTH TAKEOFF WAS TO FLY UNDER THE LINESAFTER LIFT-OFF OR TO TURN & CROSS OVER THE LINES WHERE THEY ARE LOW TO THE GROUND. WHILE TAKING OFF, THE ACFT WAS OBSERVED TO CLIMB NORMALLY TO APRX 30 FT AGL, THEN BEGAN TO ACCELERATE. APRX 500 FT NORTH OF THE POWER LINES, THE ACFT ENTERED AN ABRUPT CLIMB & REPORTEDLY WENT TO A NEAR VERTICAL ATTITUDE. IT THEN ROTATED ABOUT THE LEFT WING & DESCENDED VERTICALLY INTO THE CANAL, IMPACTING APRX 100 FT NORTH OF THE POWER LINES. AN EXAM REVEALED NO EVIDENCE OF A PREIMPACT MALFUNCTION OR FAILURE. AN INVESTIGATION REVEALED THAT THE PLT HAD BEEN GIVING FLT INSTRUCTION TO THE PASSENGER. IT WAS NOT VERIFIED WHO HAD PULLED THE ACFT UP, BUT THE PLT'S NORMAL PROCEDURE WAS TO FLY UNDER THE WIRES.

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

AIRSPEED..NOT MAINTAINED

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

REMEDIAL ACTION..INADEQUATE..PILOT IN COMMAND

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

STALL..INADVERTENT..PILOT IN COMMAND

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

SUPERVISION..IMPROPER..PILOT IN COMMAND

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

PULL-UP..EXCESSIVE..PASSENGER


Contributing Factors

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND


Contributing Factors

QUALIFICATION..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..HIGH OBSTRUCTION(S)

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