HOW TO FIND PARTNUMBER IN BOEING AIRCRAFT : PART 1

The video introduces the topic of finding part numbers for electrical items in Boeing aircraft using WDM and SWPM manuals. An example is set up using a connector and wire bundle from an emergency power assist system on a Boeing 777 Door 3 right-hand side, specifically focusing on equipment number Mike 52123.

The presenter displays a wiring diagram for the emergency power assist system. The example is chosen because it features different wire gauges and two types of contacts within a single plug, making it ideal for demonstrating the complexity of finding part numbers. Two specific wire examples are selected: 0030-20 and 0036-18.

The video demonstrates how to use the Wiring Diagram Manual (WDM) to find details when only the bundle number and wire number are known. By searching for the bundle number (W3015) in the 'Wireless' section of the WDM, information such as wire gauge, part number, length, and originating/ending equipment (including contact location) is retrieved. This helps to identify the diagram reference (52-11-19) for the specific system.

Using the diagram reference 52-11-19, the video shows how to visually confirm the wire's connections within the diagram. The details, such as the 'from' and 'to' equipment and contact positions, are then used to fill out a tabular form, ensuring accurate recording of the information for both wire examples (0030-20 and 0036-18).

The video explains that for connector replacement, where multiple bundles might converge, the 'Hookup List' (reference 91-21-51) in the WDM is used. This list is organized by connector equipment number and provides a detailed breakdown of each contact position, wire number, and associated bundle, simplifying the replacement process.

To find the part numbers for the connector and its backshell, the video guides users to the 'Equipment List' section of the WDM. By searching for the equipment number (DM52123), the full part number, description, and physical location of the connector are found. The backshell part number is identified by an additional letter in the equipment number (e.g., DM52123Tango).

For detailed contact information, the Standard Wiring Practice Manual (SWPM) is used. The partial part number of the connector is searched in the SWPM's front matter to identify the relevant chapter (e.g., 20-61-11). This chapter contains detailed information about the connector, including its contact configurations and part numbers.

Within the SWPM, the video demonstrates how to find the 'insert configuration' (e.g., 14-12) for the connector. This configuration specifies the number and sizes of different contacts (e.g., 3 contacts of size 16 and 9 contacts of size 20). A figure (e.g., Figure 66) is then consulted to visually identify the location of each contact size within the connector.

With the contact size (e.g., 20-20 or 16-16) and type (pin or socket) determined, the video returns to the contact part number section in the SWPM. Multiple part numbers are often listed based on different finishes (rhodium, gold, localized gold). The appropriate part numbers are then recorded for both wire examples.

The process for finding wire part numbers starts by returning to the 'Wireless' section of the WDM. For a specific wire (e.g., 0030-20), the 'type code' (e.g., Papa Alpha) is identified. This type code is then used in the 'Wireless Definition' or corresponding chapter (e.g., 20-00-13) of the SWPM to determine the full wire part number including specification, type, class, gauge, and color code (e.g., 009 for white).

The video also shows how to find alternate wire part numbers in the SWPM, which can be useful for substitutions. Finally, the presenter briefly outlines what will be covered in the next parts of the series, including finding part numbers for special splices (SM4) and shielded wires.