You might be mis-remembering a bit. The list of Saturn V launches at Wikipedia shows some anomalies, most notably Apollo 6, where two second stage engines cut o

You might be mis-remembering a bit. The list of Saturn V launches at Wikipedia shows some anomalies, most notably Apollo 6, where two second stage engines cut out early -- but those were J-2 engines, not F-1s. It doesn't show any F-1 anomalies, though the F-1s never reached orbit in any event; as first-stage engines, they were shut down and jettisoned long before that even on a completely normal launch. https://en.wikipedia.org/wiki/Saturn_V#Saturn_V_vehicles_and_launches https://en.wikipedia.org/wiki/Saturn_V#Saturn_V_vehicles_and...