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

the TSS for Runway 17, except the
obstruction-free slope is 20:1. Future
approach visibility minimums consider
three-quarters-mile for Runway 35.
The dimensions of the TSS slope for
these approaches remain the same.
Exhibits 4F and 4G present an
analysis of the TSS associated with
existing and alternative approach
procedures for Runways 17 and 35,
respectively. The top portions of the
exhibits display the plan, or “overhead”
view of each TSS. The bottom half of
each exhibit depicts the profile view of
the TSS conditions.
Exhibit 4F presents the airspace
obstruction evaluation for Runway 17
considering existing and alternative
conditions. There are no identified
obstructions to the 34:1 TSS slope
under both the existing and planned
approaches for Runway 17. It should be
noted that F.A.R. Part 77 requires that
additional elevation be added to roads
and railroads in order to provide
clearance over vehicles and trains.
Railroads require an additional 23 feet
and roads such as Scyene Road require
an additional 15 feet. The TSS clears
these potential obstructions.
Exhibit 4G presents airspace
obstruction analysis for the Runway 35
end. The existing TSS slope, as well as
the TSS slope associated with a 1,000foot
and 1,370-foot extension, are
presented. There are no existing TSS
penetrations to the existing TSS slope.
The only TSS penetration identified for
the future condition is a single tree that
penetrates by one foot associated with
4-18
the 1,370-foot runway extension
scenario.
Building Obstructions
F.A.R. Part 77, Objects Affecting
Navigable Airspace, was developed to
protect the airspace and approaches to
runways from hazards which would
affect the safe and efficient operation of
the airport.
The previous master plan recommended
that a number of T-hangars be removed.
These hangars penetrate the 500-foot
primary surface, as defined in F.A.R.
Part 77. These hangars were also in
poor condition, with dirt floors, leaky
roofs, and deteriorating paint. Since
then, the hangars have been
rehabilitated. As a result, this plan will
not consider the removal of the Thangars.
Instead, these hangars should
remain a revenue-generating source for
the airport.
Ultimately, it is the FAA and their
evaluation of the airspace surrounding
Mesquite Metro Airport that will
determine if any buildings will be
obstructions to the ultimate airport
design. This plan will proceed under
the assumption that none of the
buildings will need to be removed or
relocated in order to achieve
improvements to the approaches.
The north end Department of Public
Safety (DPS) hangar may be an
obstruction to the departure surface as
described in TERPS. This surface is
1,000 feet wide, centered on the