Air carrier flight crew reported being notified of an altitude deviation on a previous flight. The flight crew could not recall any deviations or ATC alerts and stated the flight landed safely
Synopsis
Air carrier flight crew reported being notified of an altitude deviation on a previous flight. The flight crew could not recall any deviations or ATC alerts and stated the flight landed safely
Narrative
I was made aware of a possible pilot deviation that occurred when cleared for an approach to landing; with the information provided being that we were cleared to descend on the approach and at one point were at 1300 ft. 6NM out from the runway. After speaking with the First Officer I was flying with on this trip; we both cannot recall this specific event and do not remember any pilot deviations occurring.I was made aware of a possible pilot deviation that occurred on our flight from ZZZ to ZZZZ while on the ILS Z approach to Runway XXL. The notification I received via email was that we were cleared to descend on the approach; but descended to 1300 ft. 6NM out from the landing runway. While the First Officer and I don't remember being in a too low situation; after careful review of the chart I believe what had happened was that I must have set 1300 ft. in the altitude alerter for the bottom fix on the approach (ZZZZZ 1290 ft.); and must have been in FLCH prior to either arming the approach or disconnecting the Autopilot; and reached 1300 prior to the final approach fix. We may have also been turned in with a high and tight vector to join the approach; that would have been one reason for us to get down quickly in FLCH and not arming the approach sooner; but I do not remember if this occurred.In the future; I will plan to be more cognizant of the potential for descending to early on the approach into ZZZZ. I will add this to my future briefings and maintain an awareness for this possible situation coming up again.
Second reporter narrative
I was made aware of a possible pilot deviation that occurred when cleared for an approach to landing with the information given being that we were cleared to descend on the approach and at one point we were at 1300 6nm out from the runway. After speaking with the Captain I was flying with on this trip we both cannot recall a specific event that this occurred and we both are unaware of any pilot deviations occurring I was made aware of a possible pilot deviation that occurred on our flight from ZZZ to ZZZZ on the ILS Z Runway XXL. The email stated that we had descended to 1300 ft. 6NM out from the landing runway. Both I and the Captain don't recall being in a too low situation or being notified by ATC or aircraft but the Captain did share a possible situation that would have possibly caused this situation. In the future I will plan to not be as rushed on short flights and add this event to future want briefings
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.