The serial number without a manufacturer's number must begin with the last five characters of which identifier?

The serial number without a manufacturer's number must begin with the last five characters of which identifier?

• A. OPFAC
• B. USN
• C. LPO
• D. BUNO

Answer: (A)

In Navy supply, when an item doesn’t have a manufacturer’s serial number, the serial used for tracking is tied to the unit that owns or operates the item. To keep this system consistent, the serial number must start with the last five characters of the OPFAC identifier. That five-character prefix signals which unit is responsible for the item, ensuring clear accountability and easy cross-referencing across inventories. The other options don’t serve as the unit-ownership tag: USN is the service branch, not a unit code; LPO is a personnel role; BUNO is a Bureau Number used specifically for aircraft.

In Navy supply, when an item doesn’t have a manufacturer’s serial number, the serial used for tracking is tied to the unit that owns or operates the item. To keep this system consistent, the serial number must start with the last five characters of the OPFAC identifier. That five-character prefix signals which unit is responsible for the item, ensuring clear accountability and easy cross-referencing across inventories. The other options don’t serve as the unit-ownership tag: USN is the service branch, not a unit code; LPO is a personnel role; BUNO is a Bureau Number used specifically for aircraft.