View Single Post
  #9  
Old June 21st 08, 03:30 AM posted to rec.aviation.piloting
More_Flaps
external usenet poster
 
Posts: 217
Default First U.S. Pilot Jailed For A Domestic Aircraft Accident

On Jun 21, 10:39*am, Larry Dighera wrote:
On Fri, 20 Jun 2008 15:40:14 -0400, "Darkwing"
theducksmail"AT"yahoo.com wrote in
:



Sounds like an unfortunate accident caused by just flying to damn low.


I wonder if those power lines are charted or NOTAMed.

Here's a chart centered on Alexander Field South Wood County (ISW):http://skyvector.com/perl/code?id=KISW&scale=1

Here's a satellite image:http://maps.google.com/maps?f=q&hl=e...dwards,+wi&ie=...

Current NOTAMs:https://pilotweb.nas.faa.gov/geo/ica...=KISW&radius=2

I don't find any mention of power lines across the river. *How is a
pilot to know they are there?

Perhaps there is some culpability on the part of the owner of the
presumably unmarked power lines that cross the river:

Here's the Advisory Circular AC 70/7460-1K Obstruction Marking and
Lighting:http://www.airweb.faa.gov/Regulatory...ry/rgAdvisoryC...
* * a. Spherical Markers. Spherical markers are used
* * to identify overhead wires. Markers may be of
* * another shape, i.e., cylindrical, provided the projected
* * area of such markers will not be less than that
* * presented by a spherical marker.

* * 1. Size and Color.
* * The diameter of the markers used on extensive
* * catenary wires across canyons, lakes, rivers, etc.,
* * should be not less than 36 inches (91cm). Smaller
* * 20-inch (51cm) spheres are permitted on less
* * extensive power lines or on power lines below 50 feet
* * (15m) above the ground and within 1,500 feet (458m)
* * of an airport runway end. Each marker should be a
* * solid color such as aviation orange, white, or yellow.

* * 2. Installations.
* * (a) Spacing. Markers should be spaced
* * equally along the wire at intervals of approximately
* * 200 feet (61m) or a fraction thereof. Intervals
* * between markers should be less in critical areas near
* * runway ends (i.e., 30 to 50 feet (10m to 15m)). They
* * should be displayed on the highest wire or by another
* * means at the same height as the highest wire. Where
* * there is more than one wire at the highest point, the
* * markers may be installed alternately along each wire
* * if the distance between adjacent markers meets the
* * spacing standard. This method allows the weight and
* * wind loading factors to be distributed.

* * (b) Pattern. An alternating color scheme
* * provides the most conspicuity against...

Unfortunately if you screw around it can bite you, whether you're flying an
airplane or driving a car.


Operating an aircraft without adequate preflight planning is ALWAYS a
bad idea. *In this case, it's not clear if there was adequate
information available to the pilot about the hazard of wires strung
across the river. *