Which unit does not require a Green Tag to stay attached through maintenance processing until serviceable?

• A. NMC
• B. AIM
• C. AMC
• D. ALC

Answer: (D)

Green Tag context: a Green Tag marks a unit as serviceable after maintenance and tells everyone in the chain that the item can be used. The tag is kept with the item through the maintenance flow until it has been tested and is ready for service.

The unit in question does not require the Green Tag to stay attached during maintenance processing because its status is tracked differently from the others. This particular unit is handled as a component that is swapped or replaced rather than repaired and bench-checked, so its serviceable status is managed through the replacement/checkout process rather than by leaving a Green Tag on the item during maintenance. In practice, the Green Tag retention flow applies to the other units, whereas the ALC is managed outside that tag-tracking method, so the tag does not stay attached for it.