GA pilot observed a tow plane's towline hit power lines at this airport on more than one occasion.

Attributes
ACN	1540431
Time
Date	201805
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Person 1
Function	Observer
Qualification	Other Private Instrument Pilot
Events
Anomaly	Deviation - Procedural Published Material / Policy Inflight Event / Encounter Other / Unknown

Narrative:

I observed a tow plane hit the power lines on approach to runway xx with their towline [twice]. During the [first] contact; the towline hook was sheared off by an electrical spark. The airport main hangar lost power. The tow plane was flying way too low; even for a normal approach to the paved runway.the second time they contacted the power line roughly less than five feet from the power pole with the transformer on it. There was no electrical sparks or power loss like first event. I attempted to contact the operator on the ground with my handheld radio to inform them. Unable to raise them; I contacted one of their crew overhead and asked they relay the message to their flight operations.

Original NASA ASRS Text

Title: GA pilot observed a tow plane's towline hit power lines at this airport on more than one occasion.

Narrative: I observed a tow plane hit the power lines on approach to runway XX with their towline [twice]. During the [first] contact; the towline hook was sheared off by an electrical spark. The airport main hangar lost power. The tow plane was flying way too low; even for a normal approach to the paved runway.The second time they contacted the power line roughly less than five feet from the power pole with the transformer on it. There was no electrical sparks or power loss like first event. I attempted to contact the operator on the ground with my handheld radio to inform them. Unable to raise them; I contacted one of their crew overhead and asked they relay the message to their flight operations.

Data retrieved from NASA's ASRS site 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.