Final answer:
Patrol Sergeants should use alternative communication means when MDCs are not operable and inform the dispatcher of the issue.
Step-by-step explanation:
When MDCs (Mobile Data Computers) are not operable, Patrol Sergeants should use alternative communication methods. This can include using hand-held radios, cell phones, or any other communication tools available to maintain contact with dispatch and other officers. Simultaneously, they should inform the dispatcher about the situation so that the dispatcher is aware of the communication limitations and can coordinate efforts accordingly and assist with any necessary repairs or workarounds.