Title: Airport Operation Management
1Airport Operation Management
2Topics
- Pavement Management
- Aircraft Rescue and Fire Fighting
- Snow and Ice Control
- Safety Inspection Programs
- Bird and Wildlife Hazard Management
3Pavement Management
- The definition of minimum quality standard for
airfield pavement by U.S. regulation - Pavement edges shall not exceed 3 inches
difference in elevation between abutting pavement
sections and between full-strength pavement and
abutting shoulders. - Pavement surfaces shall have no hole exceeding 3
inches in depth or any hole the slope of which
from any point in the hole to the nearest point
at the lip of the hole is 45 degrees or greater
as measured from the pavement surface plane,
unless, in either case, the entire area of the
hole can be covered by a 5-inch diameter circle. - Pavement shall be free of cracks and surface
variations which could impair directional control
of air carrier aircraft.
4Pavement Management
- The definition of minimum quality standard for
airfield pavement by U.S. regulation (continue) - Mud, dirt, sand, loose aggregate, debris, foreign
objects, rubber deposits, and other contaminants
shall be removed promptly and as completely as
practicable, with exceptions for snow and ice
removal operations. - Any chemical solvent that is used to clean any
pavement area shall be removed as soon as
possible, with exceptions for snow and ice
removal operations. - The pavement shall be sufficiently drained and
free of depressions to prevent ponding that
obscures markings or impairs safe aircraft
operations.
5Pavement Management
- Runways are typically paved using one of two sets
of materials. - Runways may be constructed of flexible (asphalt)
or rigid (concrete) materials. - Concrete, a rigid pavement that can remain useful
for 20 to 40 years, is typically found at large
commercial service airports and former military
base airfields. Runways made of rigid pavements
are typically constructed by aligning a series of
concrete slabs connected by joints that allow for
pavement contraction and expansion as a result of
the loading of aircraft on the pavement surface,
and as a result of changes in air temperature. - Runways constructed from flexible pavement
mixtures are typically found at most smaller
airports. Flexible pavement runways are typically
much less expensive to construct than rigid
pavement runways. The life of asphalt runways
typically lasts between 15 and 20 years, given
proper design, construction, and maintenance.
6Pavement Management
- Periodic on-the-ground inspections can easily
spot joint openings, surface cracks, and other
problems before the runway becomes a hazard to
aviation operations. Specific runway conditions
that are considered hazards include alligatoring
of asphalt surfaces, pavement cracking, rutting,
raveling, and the creation of potholes. - ???????????????,????????,?????????????????????????
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7Pavement Management
- The following symptoms provide evidence of
potential pavement failures - Ponding of water on or near pavement.
- Building up of soil or heavy turf at pavement
edges, preventing water runoff. - Clogged or overgrown ditches
- Erosion of soil at pavement edges
- Open or silted-in joints
- Surface cracking or crumbling
- Undulating or bumpy surfaces
8Pavement Management
- The FAA defines pavement maintenance as "any
regular or recurring work necessary, on a
continuing basis, to preserve existing pavement
facilities in good condition, any work involved
in the care or cleaning of existing pavement
facilities, and incidental or minor repair work
on existing pavement facilities. Pavement
maintenance involves, for example, sealing of
small surface cracks. - The FAA defines pavement rehabilitation as the
"development required to preserve, repair, or
restore the financial integrity" of the pavement.
Adding an additional layer of asphalt on the
surface of a runway with the goal of
restrengthening the pavement would be considered
a rehabilitation. - Though approaches to repairing pavements may
differ, some experts note that appropriately
timed maintenance and rehabilitation forestalls
the need to replace the pavement entirely, termed
pavement reconstruction, which is a far more
expensive process. An appropriate maintenance
program can minimize pavement deterioration.
Similarly, rehabilitation can extend the time
needed until the pavement must be replaced.
9Pavement Management
- A proper pavement management program evaluates
the present condition of a pavement and predicts
its future condition through the use of a
pavement condition index. By projecting the rate
of deterioration, a life cycle cost analysis can
be performed for various alternatives, and the
optimal time of application of the best
alternative is determined. - During the first 75 percent of its life, a
pavement's performance is relatively stable. It
is during the last 25 percent of its life that
pavement begins to deteriorate rapidly. The
challenge of pavement management programs is to
predict as accurately as possible when that 75
percent life cycle point will be reached for a
particular piece of pavement so its maintenance
and rehabilitation can be scheduled at the
appropriate times. - The longer a pavement's life can be stretched
until it must be rehabilitated, the lower the
overall life cycle cost of the pavement will be.
According to the FAA's own estimates, the total
costs for ignoring maintenance and periodically
rehabilitating poor pavement can be up to four
times as high as the cost for maintaining the
same piece of pavement in good condition.
10Pavement Management
- Runway Surface Frictions
- Runway pavement surface friction is threatened by
normal wear, moisture, contaminants, and pavement
abnormalities. Repeated traffic movements wear
down the runway surface. - Wet weather can create dynamic or viscous
hydroplaning. Dynamic hydroplaning is a condition
where landing gear tires ride up on a cushioning
film of water on the runway surfaces. - Viscous hydroplaning occurs when a thin film of
oil, dirt, or rubber particles mixes with water
and prevents tires from making sure contact with
pavement. - Contaminants, rubber deposits, and dust particles
accumulate over a period of time and smother the
surface. - The pavement itself might have depressed surface
areas that are subject to ponding during periods
of rainfall.
11Pavement Management
- Runway Surface Frictions
- The most effective and economical method of
reducing hydroplaning is runway grooving.
One-quarter-inch grooves spaced approximately 1
1/4 inches apart are made (generally with diamond
blades) in the runway surface. - These safety grooves help provide better drainage
on the runway surface, furnish escape routes for
water under the tire footprint to prevent dynamic
hydroplaning, and offer a means of escape for
superheated steam in reverted rubber skids. - Grooving also assists in draining surface areas
that tend to pond, reducing the risks of spray
ingesting, fluid drag on takeoff, and impacting
spray damage. - Unfortunately, the grooves become filled with
foreign matter and must be cleaned periodically. - The removal of rubber deposits and other
contaminants includes use of high-pressure water,
chemical solvents, and high-velocity impact
techniques.
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2004/08/24 ???? FEA182(??)
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30Aircraft Rescue and Fire Fighting
- Although the incidents of fires and emergencies
occurring at an airport are rare, when they do
occur, especially on an aircraft, the fire
fighting and rescue capabilities at the airport
may mean the difference between life and death
for pilots, passengers, and other airport
personnel. Because of this, aircraft rescue and
fire fighting (ARFF) services are strongly
recommended at all airports and are required to
be present at all airports. - For most of the airports, an agreement with local
municipal rescue and firefighting agencies is
also necessary. - The characteristics of aircraft fires are
different from those of other structures and
equipment because of the speed at which they
develop and the intense heat they generate.
Because of this, ARFF uses combinations of water,
dry chemicals, and aqueous film-forming foam
(AFFF) to fight aircraft-based and other airfield
fires.
31Aircraft Rescue and Fire Fighting
- The U.S. regulation indicates a minimum response
time of the first vehicle to an incident, defined
by the ability to reach the midpoint of the
runway farthest from the vehicle's assigned post,
of 3 minutes from when an alarm is sounded, with
all other vehicles required to the scene within a
minimum of 4 minutes. - Until the 1960s, airport fire fighting equipment
consisted of little more than modified versions
of the gear used by municipal fire services.
Today, nearly every major airport is equipped
with rapid intervention vehicles (RIVs) able to
reach runways within 2 minutes of an alarm.
Heavy-duty vehicles are designed to cross rough
ground to reach a distant runway or go into rough
terrain, where many accidents tend to occur.
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34Aircraft Rescue and Fire Fighting
- Training is a key ingredient to the overall
effectiveness of ARFF. - The followings are the recommended basic training
items - Airport familiarization
- Aircraft familiarization
- Rescue and fire fighting personnel safety
- Emergency communications systems at the airport,
including fire alarms - Use of the fire hoses, nozzles, turrets, and
other appliances required for compliance - Application of the types of extinguishing agents
required for compliance - Emergency aircraft evacuation assistance
- Fire fighting operations
- Adapting and using structural rescue and fire
fighting equipment for aircraft rescue and fire
fighting - Aircraft cargo hazards
- Familiarization with firefighters' duties under
the airport emergency plan
35Aircraft Rescue and Fire Fighting
- Furthermore, at least one ARFF person on duty
must be trained in emergency medical care,
covering the following areas - Bleeding
- Cardiopulmonary resuscitation
- Shock
- Primary patient survey
- Injuries to the skull, spine, chest, and
extremities - Internal injuries
- Movement of patients
- Burns
- Triage
36Snow and Ice Control
- Aircraft deicing
- he presence of ice or significant snow
accumulation on an aircraft's wings or fuselage
has potential significant adverse effects on the
performance of aircraft in flight. Because of
this, the removal of such accumulations is
required prior to flight. This removal process is
known as aircraft deicing. - Aircraft deicing is accomplished by spraying one
of two types of heated aqueous solutions onto the
aircraft. The heat of the solution and the force
of the spray melt and remove the accumulation.
The chemical properties of the solution act as an
antifreeze to prevent significant accumulation
prior to takeoff.
37Safety Inspection Programs
- Clearly one of the most important concerns of
airport management is operational safety. To
ensure those regulations regarding to safety are
continuously met, airport management should carry
out a comprehensive safety inspection program. - the following general categories in which
emphasis on elimination, improvement, or
education are suggested - Hazards created by weather conditions such as
snow, ice, and slush on or adjacent to runways,
taxiways, and aprons - Obstacles on and around airfield surfaces
- Hazards that threaten the safety of the public
- Hazards created by erosion, or broken or damaged
facilities in the approach, takeoff, taxi, and
apron areas - Hazards occurring on airports during construction
activity, such as holes, ditches, obstacles,
and so forth - Bird hazards adjacent to the airport
- Inadequate maintenance personnel or equipment
38Safety Inspection Programs
- A typical Safety Inspection ModelPDCA Model
- PPlan
- DDo
- CCheck
- AAction (feedback)
39Bird and Wildlife Hazard Management
- Birds and other wildlife striking aircraft in
operation in the vicinity of an airport has the
potential to cause serious damage to aircraft and
loss of human life. - In 2001, over 5,600 aircraft reported a wildlife
strike, nearly five times the amount reported in
1990. Between 1990 and 2001, an estimated 400
million per year in aircraft damage and over
500,000 hours per year of aircraft downtime was
associated with these events. Because most
strikes occur on or near airports, emphasis on
bird and wildlife management is mandated. - A flock of birds ingested into a jet engine at
takeoff can cause a dangerous stall, and a single
large bird hitting an engine with the force of a
bullet might smash a fan blade that can cost
thousands of dollars to replace. - Airport managers, as well as all other members of
the aviation community, are aware of the hazards
that can be caused by birds.
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42Bird and Wildlife Hazard Management
- There are a variety of control techniques
available that can be used individually or in
combination, including - Elimination of food sources through better
planning and implementation of a regimen for
vegetation management on the airport property. - Elimination of habitat such as trees, ponds,
building ledges, and other roosting areas. - Physical annoyance, such as noisemakers,
high-pressure water from fire hoses, and decoys,
such as papiermache owls to frighten birds. - Chemical treatment to cause dispersal and
movement of flocks or death Effective insect
control would also be a part of chemical
treatment. - Continual upgrading of scientific methods used in
assessing the effectiveness of different bird
control techniques. - Better training and management of a team
dedicated to bird hazard management. - Use of firearms or other mechanical means of
killing. - The use of trained birds of prey, such as falcons
and hawks, complements a number of other measures
enacted in recent years in the fight against bird
strikes. Moreover, several airports have turned
to border collies as an effective way to chase
birds.
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