Wiring Diagrams Flashcards
What does the -20 represent?
VHF or UHF communication systems
What is a Warning?
brings the users attention to items that can cause loss of aircraft, death, or serious injury
What is a Caution?
brings the users attention to items to avoid damage to the damage to the equipment or aircraft
What are Notes used for?
used to draw attention to any methods, materials or procedures that will make the task easier to perform
Wiring manuals contain what?
Diagrams, charts, lists, and all schematics to maintain the various electrical/electronic systems
What do Block Diagrams define?
Electrical circuits by separating a system or sub system into functional blocks
Block Diagrams are extremely useful in doing what?
gaining an initial understanding of a given system
Wiring diagrams are typically contain very specific details on what?
on wires, connectors, and pin numbers for a given system
What does the Equipment List contain?
information on various electrical components and references the appropriate schematic or diagram
What does the Hook-up List contain?
information on specific wire connections to plugs and receptacles, terminal blocks, splices, and ground points
What does the Master Wire List contain?
detailed information on wire size, types, and lengths
Charts are used to depict what?
components or wire locations in the aircraft or on a subsystem, such as pins or sockets of a connector plug
What does CF represent?
Insulation Type
The Procedures and practices used repeatedly during aircraft maintenance, troubleshooting, and repair are contained in the:
Standard Practices chapter of each manual
Typically, Standard Practices is located in what chapter?
ATA ch20
The wiring diagram manuals for AirBus aircraft are divided into what three categories?
Aircraft Schematic Manuals (ASM)
Aircraft Wiring Manuals (AWM)
Aircraft Wiring Lists (AWL)
Which category contains simplified and moderately complex illustrations?
ASM
Typically, what is the fastest way to find a given wiring diagram?
by using the Functional Item Number (FIN)
What is the Functional Item Number (FIN)?
a unique number given to each LRU on modern airbus aircraft
Any work performed on sensitive wires (including a simple disconnect/reconnect of a connector) typically requires what?
authorization of an inspector
Sensitive wires are considered to be what?
critical to flight safety and must not be modified without specific manufacturer’s approval
On the Airbus A320, an S at the end of the wire number designates what?
a sensitive wire
What is the name for the imaginary horizontal reference plane?
The Waterline
What is the name for the imaginary vertical reference plane?
The Datum
What are Wing Stations (WS) used for?
to indicate locations longitudinally along the length of the wings
(root to tip)
What is the Butt Line (BL)?
a vertical plane that divides the aircraft into a left and right half as viewed from the rear of the aircraft
Fuselage stations are measured from the where?
The datum reference plane
What is the Home Diagram of a component?
a diagram where the component is shown in full detail
*will show all the electrical connections and wires for that unit
What is the Ramp Maintenance Manual (RMM)?
an abbreviated maintenance manual specifically for line maintenance and minor troubleshooting.
What is the Aircraft Troubleshooting Manual (TSM)?
designed specifically for system
troubleshooting. This is an excellent place to start when troubleshooting systems
What is the Fault Isolation Manual (FIM)?
a manual that contains various repair strategies for given faults in a flow chart format.
computer identifies faults using a code and that code is referenced here
Which manual is typically used in conjunction with central maintenance computer systems for modern aircraft?
Fault Isolation Manual (FIM)
