airport/documents/Mesquite Master Plan Final.pdf - The City of ...

program was recently increased to offer
90 percent matching funds, instead of
50 percent, for construction costs up to
$1.6 million.
Initial consideration was given to
locating the tower on the east side of
the airfield because of the obstructionfree
environment. Locating on the east
side of the airport would require a new
access road to be constructed, a parking
lot, extension of all utilities including
electricity, water, sewer, and
communications lines, as well as land
acquisition. It is likely that the cost of
all these elements would be
substantially more than a westside site.
In addition, having the tower facing
west is considered the least desirable.
For these reasons, an eastside ATCT is
removed from further consideration.
Site A is located immediately south of
the newly constructed T-hangars, while
site B is located in the public parking
lot immediately south of the north end
aircraft tie-down apron. Site C is
situated immediately south of the
terminal building.
The three alternative sites have been
analyzed and calculations have been
made for line-of-sight and cab eye
elevation minimums. Each site was
evaluated for line-of-sight to each
runway end, including to the proposed
runway extension ends. During
engineering of the ATCT, further
analysis will include compensating
shadows (those surfaces potentially
blocked by hangars). The following
paragraphs provide specific analysis for
each site according to siting criteria
established by the FAA.
4-27
SITE A
As previously mentioned, Site A is
located immediately south of the newest
and southernmost T-hangars.
According to spot elevation information
for the airport, Site A is at
approximately 442.5 feet MSL and is
700 feet from the runway centerline.
Site A is depicted on Exhibit 4H.
Cab Eye Elevation
The minimum cab eye elevation for the
most demanding pavement surface is
491 feet MSL or approximately 48.2 feet
AGL.
Mandatory Siting Requirements
Visibility is clear and unobstructed to
both runway ends under all
alternatives. The site is nearly at
midfield, which aids visibility. As the
site is currently undeveloped and, thus,
unconstrained for development, there
will be enough room for employee
parking as well as future expansion.
This site will not derogate the signal
generated by any of the existing or
planned navigational aids.
As is the case with many ATCTs, a 48foot-tall
tower, 700 feet from the
runway would obstruct the 7:1
transitional surface for precision
approaches. Consultation with the FAA
would be necessary to get approval to
this site.