[Scan-DC] Mystery Helicopter (N499SL)

[Blair Thompson]

 Per Google, HLH Holdings is the owner. HLH stands for High Line Helicopters. 

This should shed more light on the matter:

http://www.kathrynsreport.com/2018/11/hughes-369d-registered-to-hlh-holdings.html

The commercial pilot of the helicopter reported that the purpose of the flight was to lift a utility company lineman to a structure to perform work in conjunction with a new powerline project. While transporting the lineman to the structure using a long line, the worker contacted an existing, live powerline and was seriously injured. The weather conditions at the time of the accident included 10 miles visibility and no precipitation. The pilot reported that he could not see the powerline from his perspective until it was too late to make a course change. The pilot recommended that better recognition of hazards and obstructions may have prevented the accident.

I knew a guy who worked at OSHA who would have been interested in reading that report. He has moved on to another job.     On Thursday, April 9, 2020, 08:43:50 AM EDT, Eric C. Carlson <ecarlson at gmail.com> wrote:  
 
 Given that the path exactly follows electricity transmission lines, I
assume it's being used for inspection and maintenance of the lines.
Helicopters are regularly used for this.

-Eric

On Thu, Apr 9, 2020 at 1:54 AM Alan Henney <alan at henney.com> wrote:

> My thanks to those of you who replied to my previous post trying to
> identify the tail number of another odd-ball aircraft.
>
> This helicopter flies regularly from Westminster but seems to "loiter" and
> return later to Westminster.
>
> Any thoughts?
>
> https://flightaware.com/live/flight/N499SL/history/20200408/1221Z/KDMW/KDMW
>
> Thanks again,
> Alan
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