Digits 2 through 4 in a UIC indicate what?

• A. The unique identify group, wherein a leading alpha character identifies an MTOE and a numeric identifies a TDA
• B. The year and day of the Julian date
• C. The serial number for the request day
• D. The parent unit code

Answer: (A)

The unit identification code is five characters long, with the first character as a letter and the next three as digits forming the unique identifying group. The leading letter tells you whether the unit is MTOE or TDA, and the three digits that follow create the specific numeric ID within that category. So digits 2 through 4 are the numeric portion that, together with the initial letter, uniquely identifies the unit. This is why that description best fits what digits 2–4 indicate in a UIC.