Narrative:

On climb out passing FL180, we both (captain and first officer) forgot to reset our altimeters from 30.25 to 29.92. We noticed the error just prior to starting our descent into phx. This flight was in the early morning hours with the crew operating on the back side of the clock. It was our first night of the trip and we were probably not as alert as we had not adjusted to a night schedule.

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Original NASA ASRS Text

Title: ALTDEVS AS A RESULT OF NON COMPLIANCE WITH FAR SECTION 91 PT 121 REQUIRING QNE SETTING ABOVE FL180.

Narrative: ON CLBOUT PASSING FL180, WE BOTH (CAPT AND FO) FORGOT TO RESET OUR ALTIMETERS FROM 30.25 TO 29.92. WE NOTICED THE ERROR JUST PRIOR TO STARTING OUR DSCNT INTO PHX. THIS FLT WAS IN THE EARLY MORNING HRS WITH THE CREW OPERATING ON THE BACK SIDE OF THE CLOCK. IT WAS OUR FIRST NIGHT OF THE TRIP AND WE WERE PROBABLY NOT AS ALERT AS WE HAD NOT ADJUSTED TO A NIGHT SCHEDULE.

Data retrieved from NASA's ASRS site as of July 2007 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.