A bell 206 helicopter during a preflight check a power cord for powering medical equipment was overlooked. Aircraft was flown tangling the cord in power lines.

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Attributes
ACN	439545
Time
Date	199906
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 300
Environment
Flight Conditions	VMC
Weather Elements	Rain
Light	Dusk
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Jet/Long Ranger
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	ground : parked ground : preflight
Person 1
Affiliation	company : air taxi
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 55 flight time total : 5500 flight time type : 1800
ASRS Report	439545
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure non adherence : far non adherence : company policies
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I was going to move the aircraft to the ZZZ airport so it could be hangared from the approaching severe thunderstorm. The aircraft has several orange electrical cords used to power the medical equipment and cellular telephone. I looked around the aircraft, untied the rotor blade and observed the orange cords lying on the ground. I started the aircraft and took off for the airport and returned to the hospital due to the thunderstorm. I missed one of the cords plugged into the aircraft and it became tangled in the power lines on approach to the hospital. No damage to the aircraft occurred. The incident was caused by the urgency to move the aircraft due to severe WX and the orange cords lying on the ground. I also started the aircraft without the assistance of the other crew members as they were busy.

Original NASA ASRS Text

Title: A BELL 206 HELI DURING A PREFLT CHK A PWR CORD FOR POWERING MEDICAL EQUIP WAS OVERLOOKED. ACFT WAS FLOWN TANGLING THE CORD IN PWR LINES.

Narrative: I WAS GOING TO MOVE THE ACFT TO THE ZZZ ARPT SO IT COULD BE HANGARED FROM THE APCHING SEVERE TSTM. THE ACFT HAS SEVERAL ORANGE ELECTRICAL CORDS USED TO PWR THE MEDICAL EQUIP AND CELLULAR TELEPHONE. I LOOKED AROUND THE ACFT, UNTIED THE ROTOR BLADE AND OBSERVED THE ORANGE CORDS LYING ON THE GND. I STARTED THE ACFT AND TOOK OFF FOR THE ARPT AND RETURNED TO THE HOSPITAL DUE TO THE TSTM. I MISSED ONE OF THE CORDS PLUGGED INTO THE ACFT AND IT BECAME TANGLED IN THE PWR LINES ON APCH TO THE HOSPITAL. NO DAMAGE TO THE ACFT OCCURRED. THE INCIDENT WAS CAUSED BY THE URGENCY TO MOVE THE ACFT DUE TO SEVERE WX AND THE ORANGE CORDS LYING ON THE GND. I ALSO STARTED THE ACFT WITHOUT THE ASSISTANCE OF THE OTHER CREW MEMBERS AS THEY WERE BUSY.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.