Narrative:

We were level at FL320 approaching oneil on nopac route R580. We had requested FL340 and were waiting for ATC clearance. Just prior to oneil we were given our clearance to climb to FL340. This was a busy time preparing a position report, verifying next position coords, verifying present position, checking distance to next waypoint, etc. The aircraft was on autoplt. The altitude was set in the altitude select window and a climb was started. Both pilots acknowledged the altitude in the window. We reached oneil midway through our climb. The aircraft turned on course. The PF forgot to arm altitude capture and the PNF forgot to verify it on the FMS panel. As a result, we did not catch the deviation until the altitude warning sounded. By the time we reversed our climb, we had deved 800 ft high. We did not follow SOP's because we were busy. We should have waited until we were established on the next leg before changing altitude. Supplemental information from acn 339492: maybe carelessness and a little fatigue on my part, we were rescheduled to leave at XA30 instead of XH00 and I was planning on timing my sleep to wake up accordingly.

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Original NASA ASRS Text

Title: AN ACR WDB CREW ADMITS THAT IT OVERSHOT ITS CLB ALT BECAUSE THEY FORGOT TO ARM THE ALT SELECT.

Narrative: WE WERE LEVEL AT FL320 APCHING ONEIL ON NOPAC RTE R580. WE HAD REQUESTED FL340 AND WERE WAITING FOR ATC CLRNC. JUST PRIOR TO ONEIL WE WERE GIVEN OUR CLRNC TO CLB TO FL340. THIS WAS A BUSY TIME PREPARING A POS RPT, VERIFYING NEXT POS COORDS, VERIFYING PRESENT POS, CHKING DISTANCE TO NEXT WAYPOINT, ETC. THE ACFT WAS ON AUTOPLT. THE ALT WAS SET IN THE ALT SELECT WINDOW AND A CLB WAS STARTED. BOTH PLTS ACKNOWLEDGED THE ALT IN THE WINDOW. WE REACHED ONEIL MIDWAY THROUGH OUR CLB. THE ACFT TURNED ON COURSE. THE PF FORGOT TO ARM ALT CAPTURE AND THE PNF FORGOT TO VERIFY IT ON THE FMS PANEL. AS A RESULT, WE DID NOT CATCH THE DEV UNTIL THE ALT WARNING SOUNDED. BY THE TIME WE REVERSED OUR CLB, WE HAD DEVED 800 FT HIGH. WE DID NOT FOLLOW SOP'S BECAUSE WE WERE BUSY. WE SHOULD HAVE WAITED UNTIL WE WERE ESTABLISHED ON THE NEXT LEG BEFORE CHANGING ALT. SUPPLEMENTAL INFO FROM ACN 339492: MAYBE CARELESSNESS AND A LITTLE FATIGUE ON MY PART, WE WERE RESCHEDULED TO LEAVE AT XA30 INSTEAD OF XH00 AND I WAS PLANNING ON TIMING MY SLEEP TO WAKE UP ACCORDINGLY.

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.