Questions and Answers 100% Pass
What are the two major categories of pavement? - ✔✔Flexible and rigid
What are some types of flexible pavement? - ✔✔Grass, dirt, gravel and asphalt
Why are paved surfaces necessary at airports? - ✔✔To support the critical loads
imposed on them; to produce a smooth, skid-resistant and safe-riding surface
Airport surfaces are distinguished by operational control and FAA design standards
into what two areas? - ✔✔Movement and non-movement
What constitutes the movement area on an airport? - ✔✔Runways and taxiways. At
ATCT controlled airports, the surfaces under ATC control. These areas must meet Part
139 design restrictions.
What constitutes the non-movement area of an airport? - ✔✔Taxiways and aprons not
under ATCT control
How are movement and non-movement areas determined at an airport with an ATCT?
- ✔✔By Letter of Agreement (LOA) between the airport and the ATCT.
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,What is the benefit of using a rigid pavement such as Portland Cement Concrete? - ✔✔It
is about half the lifetime cost of asphalt, with a service life of 30+ years versus 5-15 years
for asphalt. Concrete is more expensive up front though, so asphalt is common at low
revenue airports such as GA.
What are two major elements that make pavements deteriorate? - ✔✔weathering and
aircraft loads
For bearing strengths of 12,500lbs or greater, what method is used to express the effect
of an individual aircraft on different pavements? - ✔✔Comparing ACN to PCN
(Aircraft Classification Number-Pavement Classification Number)
What does the Pavement Classification Number (PCN) represent to the operator/pilot?
- ✔✔PCN is the maximum pavement bearing strength for unrestricted aircraft
operations.
What is the Load Classification Number (LCN) used to describe? - ✔✔Pavement
bearing strengths less than 12,500lbs
What are the five major categories of pavement distress? - ✔✔cracking, joint seal
damage, disintegration, distortion, loss of skid resistance
Edges of abutting pavement or pavement and other areas must be no more than how
many inches in elevation difference? - ✔✔3 inches
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, What are the maximum dimensions of a hole that are allowed by Part 139? - ✔✔Any
hole with a diameter greater than 5 inches and either 3 inches deep or a slope of greater
than 45 degrees
How far are landing distances increased on wet pavement? - ✔✔By 15 percent or more
What are the three types of hydroplaning? - ✔✔Dynamic, viscous, and rubber reversion
What are three pavement elements that help to mitigate hydroplaning? - ✔✔pavement
grooving, porous friction course, wire combing
At what point should rubber removal occur on a runway? - ✔✔Based on a friction
evaluation, frequency of turbo-jet landings, or when 40% of the grooves are 1/8'' or less
in depth or width for a distance of 1,500ft
What is the normal depth and spacing of pavement grooving? - ✔✔1/4'' deep, 1/4"
wide, 1.5"apart
What are four rubber removal techniques? - ✔✔high-pressure water, chemical solvents,
high-velocity abrasive, mechanical grinding
When using a mechanical or electronic decelerometer to spot check pavement friction,
how many values are required to survey a runway and the check is conducted at what
speed? - ✔✔3 values in each third of the runway (9 total); 20mph
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