NTSB Identification: SEA90FA080.
The docket is stored on NTSB microfiche number 42865.
Accident occurred Sunday, May 20, 1990 in COEUR D'ALENE, ID
Probable Cause Approval Date: 03/31/1993
Aircraft: SWEARINGEN SA226-T(B), registration: N161RS
Injuries: 1 Fatal,4 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 ASSISTANCE OF A GROUND LINEMAN WAS OBTAINED TO CONNECT AN EXTERNAL POWER UNIT. AFTER THE ENGINES WERE STARTED, THE LINEMAN DISCONNECTED THE POWER UNIT. THE PILOT NOTED THE DISCONNECT AND COMPLETED THE CHECKLIST. WHEN HE LOOKED UP TO FIND THE LINEMAN, HE SAW AN INDIVIDUAL WALKING AWAY FROM HIS AIRPLANE AND ASSUMED THAT IT WAS THE LINEMAN THAT HAD BEEN ASSISTING HIM. THE PILOT RELEASED THE BRAKES AND STARTED FORWARD MOVEMENT OF THE AIRPLANE. THE LINEMAN, HOWEVER, WAS STILL NEXT TO THE AIRPLANE AT THE EXTERNAL POWER RECEPTACLE, WHICH WAS LOCATED ON THE RIGHT SIDE OF THE NOSE IN FRONT OF THE PROPELLER. THE LINEMAN AND POWER UNIT WERE STRUCK BY THE RIGHT PROPELLER. A TOXICOLOGY CHECK OF THE LINEMAN'S BLOOD SHOWED IT HAD AN ALCOHOL LEVEL OF 0.037%.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: INADEQUATE COORDINATION BETWEEN THE PILOT AND THE GROUND LINEMAN. A FACTOR RELATED TO THE ACCIDENT WAS: IMPAIRMENT OF THE GROUND LINEMAN FROM CONSUMPTION OF ALCOHOL.
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