In APCO 10-codes, 10-42 refers to "End tour of duty."
This code is used by law enforcement officers or emergency responders to indicate that they are finishing their shift or ending their active duty for the day. It serves as a formal announcement that they are no longer available for service and will not be responding to calls.
For example:
- Officer: "Dispatch, this is Officer Smith, 10-42 at 1700 hours."
- Dispatcher: "Copy that, Officer Smith. Have a good night."
Using 10-42 helps to communicate to dispatch and other officers that the individual is no longer on duty, ensuring that everyone is aware of the availability of personnel for response to incidents or calls for service.