QUESTIONS AND CORRECT
ANSWERS
Aerial Apparatus - CORRECT ANSWERS✅✅Fire fighting vehicle equipped with a
hydraulically operated ladder, elevating platform, or other similar device for the purpose of
placing personnel and/or water streams in elevated positions.
Aerial Device - CORRECT ANSWERS✅✅General term used to describe the hydraulically
operated ladder or elevating platform attached to a specially designed fire apparatus.
Aerial Ladder - CORRECT ANSWERS✅✅Power operated ladder, usually employing
hydraulics, that is mounted on a special truck chassis.
Tillered trailer - CORRECT ANSWERS✅✅Trailer equipped with steerable rear wheels.
Aerial ladder truss - CORRECT ANSWERS✅✅Assembly of bracing bars or rods in
triangular shapes that form a rigid framework for the aerial device.
Fly section - CORRECT ANSWERS✅✅Extendable section of ground extension or aerial
ladder. Also known as Fly.
Stabilizer - CORRECT ANSWERS✅✅The device that transfers the center of gravity of an
apparatus and prevents it from tipping as the aerial device, hydraulic lifting boom, gin pole,
or A frame is extended away from the centerline. Also known as outrigger or stabilizing jack.
Selector valve - CORRECT ANSWERS✅✅Three-way valve on a fire department aerial
apparatus that directs oil to either stabilizer control valves or the aerial device control valves.
Also known as Diverter Valve.
Hoisting cylinder - CORRECT ANSWERS✅✅Hydraulic cylinders used to lift the aerial
device from its bed to a working position. Also known as Elevation Cylinder or Lift Cylinder.
, Trunnion - CORRECT ANSWERS✅✅In a hydraulic cylinder, the pivoting end of the piston
rod that is connected to the anchor ear by the heel pin.
Tractor drawn aerial apparatus (TDA) - CORRECT ANSWERS✅✅Aerial ladder apparatus
that consists of a tractor power unit and trailer (tiller) section that contains the aerial ladder,
ground ladders, and equipment storage areas. The trailer section is steered independently of
the tractor by the tiller operator.
Tiller Operator - CORRECT ANSWERS✅✅Driver/operator of the trailer section of a
tractor-tiller aerial ladder apparatus. Also known as Tillerman.
Elevating Platform - CORRECT ANSWERS✅✅Work platform attached to the end of an
articulating or telescoping aerial device.
Aerial Ladder Platform - CORRECT ANSWERS✅✅Power operated ladder, usually
employing hydraulics, with a passenger carrying device attached to the end of the ladder.
Telescoping aerial platform - CORRECT ANSWERS✅✅An elevating platform equipped
with piping systems and nozzles for elevated master stream operations. Telescoping aerial
devices are not meant to be climbed and are equipped with a small ladder that is to used only
for escape from the platform in emergency situations.
Articulating Aerial Platform - CORRECT ANSWERS✅✅Aerial device that consists of two
or more booms that are attached with hinges and operate in a folding manner. A passenger
carrying platform is attached to the working end of the device.
Kickplate - CORRECT ANSWERS✅✅A 4-inch metal plate that runs around the bottom
edge of any railing on a balcony or elevated walkway to prevent someone's foot from slipping
off.
Huck bolt - CORRECT ANSWERS✅✅mechanically applied rivet used in the construction
of some aerial devices; can only be removed by drilling.