the Aviation Dictionary

S - sand casting
S.A.E. - Society of Automotive Engineers.
saber saw - A hand-held, electrically operated jigsaw
that uses a short, stiff blade. It operates using
reciprocating motion.
sacrificial corrosion - A method of corrosion protection
in which a surface is plated with a metal less noble than
itself. Any corrosion will attack the plating rather than
the base metal.
saddle-mount oil tank - An externally mounted sheet
metal tank with a contour, which allows the tank to
mount around the curvature of a turbine engine
compressor case.
safety alert - A safety alert issued by ATC to aircraft
under their control if ATC is aware the aircraft is at an
altitude that, in the controller's judgment, places the
aircraft in unsafe proximity to terrain, obstructions, or
other aircraft. The controller can discontinue the
issuance of further alerts if the pilot advises he is
taking action to correct the situation or has the other
aircraft in sight.
a. Terraidobstruction Alert - A safety alert issued
by ATC to aircraft under their control if ATC is aware
the aircraft is at an altitude that, in the controller's
judgment, places the aircraft in unsafe proximity to
terraidobstructions; e.g., "Low Altitude Alert, check
your altitude immediately."
b. Aircraft Conflict Alert - A safety alert issued by
ATC to aircraft under their control if ATC is aware of
an aircraft that is not under their control at an altitude
that, in the controller's judgment, places both aircraft
in unsafe proximity to each other. With the alert, ATC
will offer the vilot an alternate course of action when
feasible; e.g., "Traffic Alert, advise you turn right
heading zero niner zero or climb to eight thousand
immediately."
The issuance of a safety alert is contingent upon the
capability of the controller to have an awareness of an
unsafe condition. The course of action provided will be
predicated on other traffic under ATC control. Once
the alert is issued, it is solely the pilot's prerogative to
can occur in the event that the spark plug lead is
disconnected from the spark plug.
safety glass - A glass that does not leave potentially
dangerous jagged fragments when it is broken. Some
safety glass is laminated with a tough plastic
membrane between layers of glass, while others consist
of tempered glass.
safety needs - A level of Maslow's Hierarchy of human
needs, which includes protection against danger,
threats, and deprivation.
safety program manager - An FAA employee who
designs, implements, and evaluates the Aviation Safety
Program within the FAA Flight Standards District
Office (FSDO) area of responsibility.
safety valve - A relief valve that opens to relieve
pressure in a container if the pressure rises above a
predetermined value.
safety wire - Soft wire made of galvanized low-carbon
steel, annealed stainless steel, or brass, used to prevent
nuts and bolts from vibrating loose.
safety wiring - A method of fastening bolts or
screw-heads together with soft wire to help prevent
loosening.
safetying - Installing a device in order to help prevent
an attachment from loosening.
sail back - A maneuver during high wind conditions
(usually with power off) where float plane movement
is controlled by water rudders, opening and closing
cabin doors, etc.
sailplane - A high performance glider.
sal ammoniac - Ammonium chloride.
salient pole - The field pole of a motor or generator that
extends out from the field frame toward the armature.
salt - The result of the combination of an alkali with an
acid. Salts are generally porous and powdery in
appearance and are the visible evidence of corrosion in
a metal.
samarium - A metallic element with a symbol of Sm
determine what course of action, if any, he will take. and an atomic number of 62.
safety belt - A belt designed specifically to fasten a same direction aircraft - Aircraft are operating in the
person to an object such as an aircraft seat to prevent same direction when:
injury or falling. a. They are following the same track in the same
direction; or
safety factor - A structural design feature. Safety factor
b. Their tracks are parallel and the aircraft are flying
is the ratio of the maximum load a structural member is
in the same direction; or
designed 'Ompared to the c. Their tracks intersect at an angle of less than 45
probable load to which it will be subjected.
degrees.
safety gap - A specifically designed space in a
high-tension magneto that allows a spark to jump
without damaging the magneto's internal parts. This
sand casting - A casting in which the mold is made by
shaping special casting sand around a pattern. The
pattern is removed, and molten metal is poured into the
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