Final answer:
When a GEN 2 OFF message appears, it signals that the second generator is offline, and pilots should follow their aircraft's emergency checklist, which typically involves the PNF utilizing the GEN OFF checklist. The correct action includes checking electrical system status, possibly engaging standby power, and preparing for emergency procedures if the situation cannot be resolved.
Step-by-step explanation:
When a GEN 2 OFF caution message comes on, the appropriate action to take is dependent on the specific situation and procedures of the aircraft in question. However, generally speaking, this message indicates that the second generator of the aircraft is no longer providing electrical power. In such cases, the pilot flying (PF) or pilot not flying (PNF) would refer to the aircraft's checklist for the correct procedure, which could involve troubleshooting the generator or switching to an auxiliary or standby power source.
Typically, the immediate action may involve confirming the status of the electrical systems, determining if an in-flight reset is allowable per the checklist, and if not, securing the generator. Additionally, the crew should be prepared to engage the standby power system as per standard operating procedures. If the generator cannot be reset, or if additional systems are affected, this could be considered an emergency necessitating a land as soon as possible scenario. Communication with air traffic control (ATC) and adherence to appropriate emergency checklists is crucial.
The response 'd) PNF is asked for the GEN OFF checklist' seems most aligned with standard operating procedures for such an event, though exact actions to be taken will be detailed in the aircraft's specific emergency checklist.