Definition
Manufacturer-published reference documents that list every component of a specific aircraft, engine, propeller, or appliance, along with part numbers, diagrams, and assembly relationships. Mechanics and owners use them to identify the correct replacement part for a given make, model, and serial number, and to understand how parts fit together during inspection, repair, or overhaul.
Plain English
Books or digital references from the manufacturer that show every part of an aircraft, what it's called, what number to order, and how it fits with the parts around it.
Context Anchor
Seen during aircraft maintenance, especially when a mechanic or owner needs to identify, order, or verify a replacement part.
Derivation
Catalog comes from an old Greek word meaning a list or register. In this aviation use, a parts catalog is literally the official list of parts for a particular aircraft or component.
Why Pilots Care
Using the correct part from the approved catalog maintains airworthiness and prevents installation of unapproved or incorrect components.
Intuition Check
Do not think of parts catalogs as general shopping catalogs. In aircraft maintenance, they are reference sources used to identify the exact part that fits a specific aircraft, model, or serial number.
Example Sentence 1
The mechanic checked the parts catalog to find the correct filter element for the aircraft's serial number range.
Example Sentence 2
Before ordering, the technician verified the serial-number effectivity listed in the parts catalog.