Narrative:

During cruise flight at FL410 the master caution light illuminated with an associated momentary illumination of one of the gen caution lights. Due to the short period of the illumination; I wasn't able to tell which one of the 2 gen caution lights illuminated. The PF stated he thought it was the right gen caution light; but; he wasn't sure either.the illumination of the caution lights lead us to monitor the dc amps gauges. In alternating fashion and at non-specific intervals; one of the dc amps gauges would momentarily display an electric load of zero and back to 'normal' indications -- without any associated caution light illumination -- with the opposite generator picking up the load. At other non-specific intervals; both dc amps gauges indicated greater than usual fluctuations on both sides.we consulted the emergency/abnormal checklist and found no applicable checklist to the situation at hand; and; after consulting the electric system schematic in the normal checklist; we were not able to provide any reasonable explanation to the symptoms we were experiencing.we were in the vicinity of ZZZ with cavu WX conditions apparent. After a short discussion; we decided to plan on a pre-cautionary landing at ZZZ as we weren't able to ascertain what the problem is; and; concluding that the attempt to complete potential IMC operations in mountainous conditions to not be prudent -- original destination of ZZZ1 with forecast snow showers possible.the [chief pilot] was consulted prior to the initiation of the divert and no emergency was declared.after landing; the right generator caution light illuminated with the associated dc amps gauge reading zero. We taxied to the ramp without any further issues.

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Original NASA ASRS Text

Title: CE-560XL flight crew reported an AC generator malfunction during cruise at FL410. The flight crew elected to divert to a nearby airport.

Narrative: During cruise flight at FL410 the Master Caution light illuminated with an associated momentary illumination of one of the GEN caution lights. Due to the short period of the illumination; I wasn't able to tell which one of the 2 GEN caution lights illuminated. The PF stated he thought it was the right GEN caution light; but; he wasn't sure either.The illumination of the caution lights lead us to monitor the DC AMPS gauges. In alternating fashion and at non-specific intervals; one of the DC AMPS gauges would momentarily display an electric load of zero and back to 'normal' indications -- without any associated caution light illumination -- with the opposite generator picking up the load. At other non-specific intervals; both DC AMPS gauges indicated greater than usual fluctuations on both sides.We consulted the emergency/abnormal checklist and found no applicable checklist to the situation at hand; and; after consulting the electric system schematic in the normal checklist; we were not able to provide any reasonable explanation to the symptoms we were experiencing.We were in the vicinity of ZZZ with CAVU WX conditions apparent. After a short discussion; we decided to plan on a pre-cautionary landing at ZZZ as we weren't able to ascertain what the problem is; and; concluding that the attempt to complete potential IMC operations in mountainous conditions to not be prudent -- original destination of ZZZ1 with forecast snow showers possible.The [Chief Pilot] was consulted prior to the initiation of the divert and no emergency was declared.After landing; the right generator caution light illuminated with the associated DC AMPS gauge reading zero. We taxied to the ramp without any further issues.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.