Narrative:

My captain and I were operating our 2nd redeye in a row. Our flight was delayed more than 2 hours and it was [very early morning] when we finally left [the departure airport]. About an hour before arrival we started receiving reroutes and altitude changes for thunderstorms in ord. At some point ATC cleared us 'to fytte; via the fytte 4 arrival; hold at fytte as published; 10 mile legs ok'. The captain inserted the hold from the database and I said it looked good. As he finished and looked at the navigation display he seemed shocked and told me to tell ATC we would be high at a certain waypoint. I was very confused because I did not think we were given a descent clearance and did not confirm a lower altitude was set in the FCU. The captain started down as I told the controller we were a little high and her response was 'you were not cleared to descend via the arrival but just cross fytte at 11;000.' we had deviated about 300 feet. We continued our descent down and started our hold at fytte. On our outbound leg the controller asked us to verify we were holding as published. The captain told me to ask her where it was published and another pilot came on the radio and said it was at the bottom of the chart. We both looked at the chart and realized the hold is published with left turns but the database had right turns; so we were holding on the wrong side of fytte. I told the controller we would fix it on the next turn. We continued holding for 5 minutes and were cleared direct to fytte to resume the arrival and began our approach to 10C. We landed without further incident.fatigue was the major contributor to these deviations. I had only slept 4.5 hours the day prior because a maid had knocked on my door to clean my room even though I had the do not disturb sign on my door. Operating another flight plus a delayed redeye with that little of sleep was poor judgement on my part and I will call in fatigued next time.

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Original NASA ASRS Text

Title: Air Carrier First Officer reported a hold on the wrong side of FYTTE on the FYTTE 4 arrival to ORD due to fatigue.

Narrative: My Captain and I were operating our 2nd redeye in a row. Our flight was delayed more than 2 hours and it was [very early morning] when we finally left [the departure airport]. About an hour before arrival we started receiving reroutes and altitude changes for thunderstorms in ORD. At some point ATC cleared us 'to FYTTE; via the FYTTE 4 arrival; hold at FYTTE as published; 10 mile legs ok'. The captain inserted the hold from the database and I said it looked good. As he finished and looked at the Navigation Display he seemed shocked and told me to tell ATC we would be high at a certain waypoint. I was very confused because I did not think we were given a descent clearance and did not confirm a lower altitude was set in the FCU. The captain started down as I told the controller we were a little high and her response was 'you were not cleared to descend via the arrival but just cross FYTTE at 11;000.' We had deviated about 300 feet. We continued our descent down and started our hold at FYTTE. On our outbound leg the controller asked us to verify we were holding as published. The Captain told me to ask her where it was published and another pilot came on the radio and said it was at the bottom of the chart. We both looked at the chart and realized the hold is published with left turns but the database had right turns; so we were holding on the wrong side of FYTTE. I told the controller we would fix it on the next turn. We continued holding for 5 minutes and were cleared direct to FYTTE to resume the arrival and began our approach to 10C. We landed without further incident.Fatigue was the major contributor to these deviations. I had only slept 4.5 hours the day prior because a maid had knocked on my door to clean my room even though I had the Do Not Disturb sign on my door. Operating another flight plus a delayed redeye with that little of sleep was poor judgement on my part and I will call in fatigued next time.

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.