NTSB Identification: FTW84FA408.
The docket is stored on NTSB microfiche number 27018.
Accident occurred Wednesday, September 26, 1984 in WEBBERS FALLS, OK
Aircraft: CESSNA 172P, registration: N52270
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.

ACFT STRUCK ELECTRICAL TRANSMISSION LINE 80' ABOVE WATER WHILE FLYING UNDER THE LINE DURING A WILDLIFE SURVEY. THE ACFT'S MISSION WAS TO CONDUCT A DUCK COUNT ALONG A RIVER IN A NAT'L WILDLIFE REFUGE WHICH REQUIRED LOW, SLOW MANEUVERING. THE EX-AG PILOT WAS FAMILIAR WITH THE MISSION AND THE SURVEY AREA. THE ACFT'S LEFT WING TIP STRUCK THE 2' CABLE WHILE IN A 20 DEG RIGHT BANK. THE ACFT IMPACTED THE RIVER ABOUT 1/8TH OF A MILE DOWNSTREAM FRON THE WIRE.

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

OBJECT..WIRE,TRANSMISSION

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

CLEARANCE..NOT MAINTAINED..PILOT IN COMMAND

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

CLEARANCE..MISJUDGED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..WATER,ROUGH


Contributing Factors

OVERCONFIDENCE IN PERSONAL ABILITY..PILOT IN COMMAND

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