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NCATT AET AEIT Endorsement Exam 2025
Electromagnetic Interference (5.5.5.5) - Correct Ans-caused when electromagnetic
fields (radio waves) induce high-frequency voltages in a wire or component. (AC 43.13-
1B 11-89)
Grounding (5.5.5.5) - Correct Ans-Establishing a physical wire path that gives electricity
a path to earth/ground.
Bonding (5.5.5.5) - Correct Ans-Connection of non-current carrying conductive elements
ie. enclosures and structures.
Conductor plating (5.5.5.1) - Correct Ans-Copper wire plated with Tin, Silver, or Nickel.
Tin is the most common. wire plating has a slower oxidation rate than bare copper.
Voltage drop in wires (5.5.5.1) - Correct Ans-Should not exceed 2% of the regulated
voltage when the generator is carrying rated current or the battery is being discharged
at 5 minute rate.
The allowable voltage drop in a 28 volt continuous circuit is:
a. 1 volt
b. 2 volts
c. 5 volts
d. 4 volts - Correct Ans-a. 1 volt
Voltage rating (5.5.5.1) - Correct Ans-The voltage rating of a cable is the highest voltage
that may be continuously applied to a completed cable construction in compliance with
the relevant cable standard or specification
Shielded wire (5.5.5.1) - Correct Ans-Electrical wire that is enclosed in a braided metal
jacket. Electromagnetic energy radiated from the wire is trapped by the braid and is
carried to ground.
Receiving Inspection (5.4.1.1) - Correct Ans-ensure that incoming parts are checked
against purchase orders, manufacturers specifications, drawings and dimensions and
other available documentation to CONFIRM AUTHENTICITY of the material.
Conformance to applicable technical standards will be verified. Incoming material must
be separated from previously inspected material
cable (5.5.5.1) - Correct Ans-A bundle of wires covered by rubber or plastic along which
an electric current can pass.
New Equipment Acceptance (5.4.1) - Correct Ans-Receiving inspection, physical
condition, inventory of equipment and accessories for installation
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Visual inspections (5.4.1.2) - Correct Ans-New parts will be visually inspected to confirm
the PN and SN, the part markings, and general condition. All parts/components must be
accompanied by documents the CLEARY INDICATE APPROVED/ACCEPTABLE
SOURCE.
Suspected Unapproved Parts (SUP) - Correct Ans-Red Tagged - Placed in quarantine -
report using FAA Form 8120-11. Ref. AC 21-29.
Direct Marking (5.5.5.3) 1 - Correct Ans-Several different methods can be used to mark
directly on the wire: hot stamp marking, ink jet printers, and laser jet printers. The hot
stamp method can damage the insulation of a newer type of wire that utilizes thin
insulators.
Indirect Marking (5.5.5.3) 2 - Correct Ans-Identification sleeves can be used if direct
marking on the wire is not possible. Indirectly-marked wire or cable should be identified
with printed sleeves at each end and at intervals not longer than 6 feet. The individual
wires inside a cable should be identified within 3 inches of their termination
Wire Identification (5.5.5.3) - Correct Ans-All wire used on aircraft must have its type
identification imprinted along its length. It is common practice to follow this part number
with the five digit/letter Commercial and Government Entity (CAGE) code identifying the
wire manufacturer. You can identify the performance capabilities of existing installed
wire you need to replace, and avoid the inadvertent use of a lower performance and
unsuitable replacement wire.
Wire Identification Requirements (5.5.5.3) - Correct Ans-Identification markings should
be placed at each end of the wire and at 15-inch maximum intervals along the length of
the wire. Wires less than 3 inches in length need not be identified. Wires 3 to 7 inches in
length should be identified approximately at the center. Added identification marker
sleeves should be located so that ties, clamps, or supporting devices need not be
removed to read the identification. The wire identification code must be printed to read
horizontally from left to right) or vertically (from top to bottom)
Performance Standards - Technical Standard Order TSO (5.3.6.3) - Correct Ans-
Minimum performance standard for specified materials, parts and appliances used on
civil aircraft. TSO authorization IS NOT an approval to install in aircraft, only
authorization to manufacture part or material.
Performance Standards - Parts Manufacturer Approval PMA (5.3.6.3) - Correct Ans-
PMA production approval allows you to produce and sell FAA approved aircraft articles
that are eligible for installation on FAA Type Certificated Products.
schematic diagram (5.3.8.2) installation wire diagrams - Correct Ans-A schematic
diagram is used to illustrate a principle of operation, and therefore does not show parts
as they actually appear or function. However, schematic diagrams do indicate the
AET
NCATT AET AEIT Endorsement Exam 2025
Electromagnetic Interference (5.5.5.5) - Correct Ans-caused when electromagnetic
fields (radio waves) induce high-frequency voltages in a wire or component. (AC 43.13-
1B 11-89)
Grounding (5.5.5.5) - Correct Ans-Establishing a physical wire path that gives electricity
a path to earth/ground.
Bonding (5.5.5.5) - Correct Ans-Connection of non-current carrying conductive elements
ie. enclosures and structures.
Conductor plating (5.5.5.1) - Correct Ans-Copper wire plated with Tin, Silver, or Nickel.
Tin is the most common. wire plating has a slower oxidation rate than bare copper.
Voltage drop in wires (5.5.5.1) - Correct Ans-Should not exceed 2% of the regulated
voltage when the generator is carrying rated current or the battery is being discharged
at 5 minute rate.
The allowable voltage drop in a 28 volt continuous circuit is:
a. 1 volt
b. 2 volts
c. 5 volts
d. 4 volts - Correct Ans-a. 1 volt
Voltage rating (5.5.5.1) - Correct Ans-The voltage rating of a cable is the highest voltage
that may be continuously applied to a completed cable construction in compliance with
the relevant cable standard or specification
Shielded wire (5.5.5.1) - Correct Ans-Electrical wire that is enclosed in a braided metal
jacket. Electromagnetic energy radiated from the wire is trapped by the braid and is
carried to ground.
Receiving Inspection (5.4.1.1) - Correct Ans-ensure that incoming parts are checked
against purchase orders, manufacturers specifications, drawings and dimensions and
other available documentation to CONFIRM AUTHENTICITY of the material.
Conformance to applicable technical standards will be verified. Incoming material must
be separated from previously inspected material
cable (5.5.5.1) - Correct Ans-A bundle of wires covered by rubber or plastic along which
an electric current can pass.
New Equipment Acceptance (5.4.1) - Correct Ans-Receiving inspection, physical
condition, inventory of equipment and accessories for installation
AET
, AET
Visual inspections (5.4.1.2) - Correct Ans-New parts will be visually inspected to confirm
the PN and SN, the part markings, and general condition. All parts/components must be
accompanied by documents the CLEARY INDICATE APPROVED/ACCEPTABLE
SOURCE.
Suspected Unapproved Parts (SUP) - Correct Ans-Red Tagged - Placed in quarantine -
report using FAA Form 8120-11. Ref. AC 21-29.
Direct Marking (5.5.5.3) 1 - Correct Ans-Several different methods can be used to mark
directly on the wire: hot stamp marking, ink jet printers, and laser jet printers. The hot
stamp method can damage the insulation of a newer type of wire that utilizes thin
insulators.
Indirect Marking (5.5.5.3) 2 - Correct Ans-Identification sleeves can be used if direct
marking on the wire is not possible. Indirectly-marked wire or cable should be identified
with printed sleeves at each end and at intervals not longer than 6 feet. The individual
wires inside a cable should be identified within 3 inches of their termination
Wire Identification (5.5.5.3) - Correct Ans-All wire used on aircraft must have its type
identification imprinted along its length. It is common practice to follow this part number
with the five digit/letter Commercial and Government Entity (CAGE) code identifying the
wire manufacturer. You can identify the performance capabilities of existing installed
wire you need to replace, and avoid the inadvertent use of a lower performance and
unsuitable replacement wire.
Wire Identification Requirements (5.5.5.3) - Correct Ans-Identification markings should
be placed at each end of the wire and at 15-inch maximum intervals along the length of
the wire. Wires less than 3 inches in length need not be identified. Wires 3 to 7 inches in
length should be identified approximately at the center. Added identification marker
sleeves should be located so that ties, clamps, or supporting devices need not be
removed to read the identification. The wire identification code must be printed to read
horizontally from left to right) or vertically (from top to bottom)
Performance Standards - Technical Standard Order TSO (5.3.6.3) - Correct Ans-
Minimum performance standard for specified materials, parts and appliances used on
civil aircraft. TSO authorization IS NOT an approval to install in aircraft, only
authorization to manufacture part or material.
Performance Standards - Parts Manufacturer Approval PMA (5.3.6.3) - Correct Ans-
PMA production approval allows you to produce and sell FAA approved aircraft articles
that are eligible for installation on FAA Type Certificated Products.
schematic diagram (5.3.8.2) installation wire diagrams - Correct Ans-A schematic
diagram is used to illustrate a principle of operation, and therefore does not show parts
as they actually appear or function. However, schematic diagrams do indicate the
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