What structural areas allow maintenance to inspect or service aircraft components?
Nacelles
Windows
Doors
Plates and Skins
Which major structural area provides support for the engines?
Wings
Stabilizers
Fuselage
Which is not a major aircraft structural area?
Wing Carry-Through
Which component guards against accidental firing of ejection seats?
Safety Pins
Red Streamers
initiators
How do independent positioning determine subsystem function?
By recording radar data
By calculating aircraft velocity
Independent of inertial navigation
Independent of ground epuipment
which is not an avionics system?
built in test system
control and displays
central computing complex
navigation and weapon delivery
which is not part of an engine indicating system
oil quanity
water temperature
engine vibration
fuel flow
what is normally considered a minimum safe distance from the intake of an operating jet engine?
25 feet to the front and sides
50 feet to the front and sides
50 feet to the front and 25 feet to the sides
25 feet to the front and 10 feet to the sides
When approaching overheated aircraft wheels, always approach the wheel
from the side of the wheel
only after the blowout screen is installed
from the front of or behind the wheel
at a 45 degree angle to the wheel
initially what happens when RF energy is absorbed in the tissue of your body
heat is produced
nothing
your internal organs start to deteriorate
your heart beats irregulary
what is the minimum safe distance from an UHF antenna when the associated transmitter is radiating power?
1 foot
3 feet
5 feet
10 feet
the minimum safe distance from an HF antenna when the associated transmitter is radiating power is
which condition is usually not caused by an over exposure to noise?
hearing problems
fatigue
excessive energy
speech problems
the greatest noise levels around an operating jet aircraft engine is to rear of the engine through an angle of
45 degrees on either side
90 degrees on either side
60 degrees on either side
which physical symptom is least likely to indicate a person is suffering from over exposure to noise?
unconsciousness
dizziness
vomiting
nausea
which is a condition that results from frequent exposure to small overdoses of noise
frequent nausea
permanent hearing loss
temporary weight gain
small overdoses have little to no effect
which is not an Air Force inspection concept
preflight
phased
isochronical
periodic
which units fall under the programmed depot maintenance inspection concept
All units regardless of majcom
ACC unit
AMC units
AFSOC units
which inspection is designed to detect defects that might have developed during ground operations of the aircraft
phase
end of runway
basic post flight
when is the thruflight inspection perfromed
after the last flight of each day
before the aircraft goes on alert
prior to takeoffs at intermediate stops
after a specific number of flying hours has elapsed
which inspection is more extensive than the hourly postflight or basic postflight inspections and covers certain parts, areas, and systems of the aircraft that require less frequent inspections
minor
major
when the HSC inspection becomes due during a long-range mission, it is completed at the base
to which the aircraft belongs
where the first intermediate stop is made
from which the mission is being performed
nearest the aircraft when the inspection becomes due
which inspection includes a review of the forms for current status, a visual inspection of equipment for defects, and adequate servicing
special inspection
acceptance inspection
operator inspection
periodic inspection and scheduled lubrication
malfunctions documented on an AFTO form 244 are the responsibility of
aerospace ground equipment mechanics
avionics backshop personnel
flight line technicions
propulsion mechanics
Part V of the AFTO form 244 is used to document
maintenance/delayed discrepancies
non-scheduled inspections
item identifications
scheduled inspections
the AFTO form 781 series would not be used to document aircraft
flight records
configurations
component repair
inspections
except for battle damage, each discrepancy discovered is documented on AFTO form 781
B
K
L
A
at what point do you erase symbols you entered on the AFTO form 781A
when you enter them in error
when you find them to be incorrect
when you must correct a discrepancy
never, even if you entered them in error
who ensures the job control number (when assigned) is entered on the AFTO form 781 A
technicion
supervisor
crewchief
aircraft crew member
which information is required in the corrective action block of the AFTO form 781 A
description of the corrective action
TO reference
technicians signiture
supervisors signiture
who is responsible for the validity and legibility of all comsec required entries
pro super
Comm/nav technician
aircrew
which AFTO form is used to document maintenance status and servicing information
781A
781B
781H
781J
which AFTO form is used to document aerospace vehicle time and engine data including operating time
781K
781L
Which AFTO form allows you to record essential inspection and delayed maintenance data
Block C of the AFTO form 781K is used to document
inspection items that require inspection/testing at a specified time/period
all immediate and urgent action TCTOs upon compliance
the status of depot maintenance
higher authority inspection
to "flag" a condition on an aircraft that could cause damage or injury of ignored, use
AFTO form 244
AFTO form 781K
AF form 1492
AF form 979
What portion of the tag is used to provide a "cross-check" with the aircraft forms and is inserted through the aircraft forms binder
the bottom portion
the top portion
neither
both
what helps to dissipate and lessen the effects of electronic discharge
Humid air
use of non conductive packaging material
use of proper insulating materials
dehumidified air
an example of an ESDS devise is a
diode
PROM
Transistor
MOSROM
what type of failure associated with ESD is the most difficult to detect
intermittent
erroneous signal
latent or delayed
total component
which is not a flight line precaution used to protect ESDS components?
touching the ends of aircraft wiring to the LRU case prior to installation
touching the LRU case with your hand proir to removal from the aircraft
covering LRU connector plugs
using protective tote boxes
when working on ESDS devices in the shop area, you must use
ungrounded floor mats
a grounded work bench
nonconductive antistatic mats
a grounded LRU
what type of ground do you need to provide for soldering irons in an ESD protected area
hard
shielded
floating
common
which action could pose a safety hazard to personnel in an ESD protected area
improper use of conductive bags
wearing of personal clothing
use of ionozers
improper use of conductive tote boxes
which type of cable carries RF power from one point to another with a known rate of loss
emp
coaxial
insulated
which is not a type of connector coupling
friction
bayonet
insertion
threaded
all of the following are rf connectors precautions except
never step on the cable
ensure a good grip when using pliers
ensure you solder double shielded cables together
ensure you do not exceed the bend radius of the cable
twisting of the fiber optic cable during installation or maintenance results in
stretching of the glass fibers
greater elasticity of the glass fibers
reduced optical power transmission
good tension control preventing loose or uneven standing
what is not an advantage of fiber optic cables over wire cables?
cost
light weight
low attenuation
immunity to electromagnetic interference
optoelectric transducer detectors perform what functions in a fiber optic transmission
amplifies output circuit signals
converts electrical signal to light signals
converts optical energy to electrical energy
emit light when current is passed through them
utilizing exact dimensions for stripping wire ensures
connectors will mate properly
solder will adhere properly
RF will not be impeded
proper connections
flux is designed to
keep connections clean
bond electrical connection
ensure electrical conductivity
proper care of an electric soldiering iron involves
cooling the iron by dipping it in water
jerking the iron to remove excess solder
tapping an iron on a table to remove excess solder
keeping iron in a proper holder when you are not using it
which is not a type of solderless connector
splice
terminal lugs
connector splice
connector plug pins
what type of solderless connector permits easy and efficient connections to electrical equipment
one purpose of crimper positioner is to
align crimper handles to pin contact
put pin contacts in the proper position
put the turret head in line with pin contact
adjust the pressure applied to the connector pins
the colored end of an insertion and extraction is used for contact
insertion into a rear release connector plug
extraction from a rear release connector plug
insertion into a front release connector plug
extraction from a front release connector plug
one way of pressure and moisture sealing the back of a connector is to use
silicone tape
silicone caulking
heat shrinkable tape
electrical wrapping tape
the MIL-STD that governs heat tool operation in a potentially explosive environment is
810
811
812
813
the heat and air pressure required for proper installation of heat shrink products is controlled by the
tool operater
air/nitrogen regualtor
temperature controller
tubular heating elements
as a flight line technician, you can repair up to
20% of the inner shield circumference of an EMP hardened cable
20% of the outer shield circumference of an EMP hardened cable
25% of the inner shield circumference of an EMP hardened cable
25% of the outer shield circumference of an EMP hardened cable
Before performing any type of wire repair, you must consult the procedures in TO
1-1A-14
1-1A-15
1-1A-16
1-1A-18
what precaution must you adhere to prior to heat shrink to a wire repair job
ensure proper lighting
inventory required tools
read all procedures in TO 1-!A -14
warnings concerning use of heat tools on aircraft
what is the purpose of prewaxing cotton or linen tape when used for wire bundling
prevents sliping
lessens tendencies to cut wire insulation
promotes moisture and fungus resistance
fulfills temperature requirements for tying materials
which of the following is not considered a general precaution when lacing or tying wire groups or bundles
lace or tie bundles tightly enough to prevent slipping
tie all wire groups or bundles 12in or less apart
do not use ties on any part of a wire group or bundles that is located inside a conduit
when tying wire bundles behind connectors, start ties far enough back from the connector to avoid playing (spreading) of contacts
the circuit used in an AM trasmitter to bring the oscillator frequency up to the designated frequency required for carrier wave operation is
a buffer amplifier
an audio amplifier
a power amplifier
a frequency multiplier
to achieve AM, what device is used to ensure the output signal contains frequencies not present in the input signals
linear amplifier
power amplifier
balanced amplifier
non-liner amplifier
the frequencies created by the heterodyning process in an AM transmitter modulator are the
different and original
sum and difference
sum and original
two originals
which is not a basic characteristic that can vary in a modulating wave or signal?
frequency
amplitude
rate
in an FM signal, the amount of frequency modulation is controlled by the modulating signal's
in an FM transmitter, the frequency of the oscillator is controlled by the
reactance modulator
power amplifier circuit
frequency multiplier circuit
frequency discriminator
in an FM transmitter, which circuit detects the output frequency changes and produce an automatic frequency control correction voltage?
filter
converter
modulator
discriminator
the low pass filter in the automatic frequency control circuitry of a FM transmitter prevents
the lower sideband from being transmitted
correction voltage changes caused by the modulation signals
carrier frequency feedback from tuning the reactance modulator
the audio signal from the audio amplifier from tuning the reactance modulator
which is not an advantage of single sideband over double sideband
power frequency
frequency stability
signal to noise ratio
spectrum conservation
in a single sideband transmitter, frequency stability is controlled by
the original carrier frequency
reinserted carrier frequencies
precision frequency standards
carefully controlled oscillators
in a single sideband transmitter, the balanced modulator's output consists of
the carrier, upper sideband, and lower sideband
the upper and lower sidebands
the lower sideband only
upper sideband only
the single sideband transmitter circuit that increases the power output without introducing distortion is the
power synthesizer
balanced modulator
liner power amplifier
the ability of a radio receiver to select a particular station frequency from all other station frequencies that appear at the receiver antenna is called
sensitivity
reception
detection
selection
In a typical AM superheterodyne receiver, the process used to tune two or more circuits with a single control is called
slug tuning
ganged parallel
parallel tuning
staggered tuning
in a typical AM superheterodyne receiver, the heterodyning process produces four frequencies; they are the two basic input frequencies, there sum, and their difference frequency is known as the
sum frequency
original frequency
sideband frequency
intermediate frequency
the purpose of the limiter circuit in an FM receiver is to
add amplitude variations to the intermediate frequency signal
remove amplitude variations from the intermediate frequency signal
remove frequency variations from the intermediate frequency signal
rectify the audio frequency signal from the intermediate frequency section
FM modulation signals provide much more realistic sound reproduction than AM signals because
FM uses a lower frequency range
amplitude modulation of the carrier increases
of an increase in the number of sidebands
of a decrease in the number of sidebands
the two advantages of using a single-sideband receiver over an AM receiver are the ability to place
more signals in a small portion of the frequency spectrum and a narrower receiver band pass
more signals in a small portion of the frequency spectrum and a wider receiver band pass
fewer signals in a small portion of the frequency spectrum and a narrower receiver bandpass
fewer signals in a small portion of the frequency spectrum and a wider receiver bandpass
the basic difference between the single sideband receiver and a conventional superheterodyne receiver is that the single-sideband receiver uses a
carrier reinsertion oscillator and special mixer circuits
special detector and carrier reinsertion oscillator
discriminator and local oscillator circuit
limiter and special mixer circuit
a major drawback in using a single sideband recierver over an amplitude modulated receiver is the
need for critical frequency stability
single-sideband receiver has a narrow bandpass
amplitude modulated receiver requires only one oscillator circuit
weak signals are easy to detect in the amplitude modulated receiver
a receiver radio antenna receives radio frequency signals by
accepting and amplifying the minute current
removing the radion frequency carrier wave
converting energy to magnetic and electrical fields of force
electromagnetic fields impressing a voltage across the antenna thus causing current to flow
the ratio of the maximum radiation intensity of a given directional radio antenna to the radiation intensity of a non directional radio antenna using the same power input is known as antenna
gain
arrays
efficiency
reciprocity
the radio frequency line that has uniform capacitance between the conductors throughout the length of the line is the
shielded pair
air coaxail line
parallel two wire
flexible coaxial line
when the impedance of a radio frequency transmission line and load do not match, the reflected wave and the applied wave are on the line at the same time are creating a
traveling wave
standing wave
reflected wave
resultant wave
what type of radio frequency transmission line losses result from the skin effect?
copper losses
dielectric losses
radiation losses
induction losses