Narrative:

We were cleared to 'descend via the RAVNN2 arrival' by potomac approach control. The arrival requires aircraft to cross ott at 9000'. I as captain did not notice that my first officer as flying pilot had selected a manual vertical speed descent mode to 6000'. Such actions caused our aircraft to end up at 6000' just prior to ott. At the same time we noticed this altitude deviation we were contacted by potomac and switched to another freq. No conflicts occurred. The flight continued without further incident to the airport. Although this deviation was my responsibility as captain; I believe that fatigue played a role in this occurrence. My first officer and I had been 'reassigned' from our original trip the night prior and placed into a 9 hour overnight after a long day of flying. We arrived at our overnight late and waited for the hotel van and I arrived at my room at XX15 local. Our van time the next morning was XI15 local. That's eight hours 'behind the door' time. The next day was full of weather and six plus hours of flying time. Both the first officer and myself were tired to say the least. I know that operating with weather delays requires changes to trips; that's part of the job. But short overnights at noisy hotels and long days of flying on both sides of the overnights is a recipe for problems. This hotel; although a very nice hotel is right under the centerline of a runway ; on that overnight; arrivals were in full force. This all plays a 'major' factor on crew rest even on normal long overnights.

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Original NASA ASRS Text

Title: A large air carrier transport failed to cross OTT at 9000 MSL as required by the RAVNN 2 RNAV STAR to BWI; fatigue was cited as a contributory factor.

Narrative: We were cleared to 'descend via the RAVNN2 arrival' by Potomac Approach Control. The arrival requires aircraft to cross OTT at 9000'. I as Captain did not notice that my First Officer as flying pilot had selected a manual vertical speed descent mode to 6000'. Such actions caused our aircraft to end up at 6000' just prior to OTT. At the same time we noticed this altitude deviation we were contacted by Potomac and switched to another freq. No conflicts occurred. The flight continued without further incident to the airport. Although this deviation was my responsibility as Captain; I believe that fatigue played a role in this occurrence. My First Officer and I had been 'reassigned' from our original trip the night prior and placed into a 9 hour overnight after a long day of flying. We arrived at our overnight late and waited for the hotel van and I arrived at my room at XX15 local. Our van time the next morning was XI15 local. That's eight hours 'behind the door' time. The next day was full of weather and six plus hours of flying time. Both the First Officer and myself were tired to say the least. I know that operating with weather delays requires changes to trips; that's part of the job. But short overnights at noisy hotels and long days of flying on both sides of the overnights is a recipe for problems. This hotel; although a very nice hotel is right under the centerline of a runway ; on that overnight; arrivals were in full force. This all plays a 'major' factor on crew rest even on normal long overnights.

Data retrieved from NASA's ASRS site as of April 2012 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.