Narrative:

On the sfo-phx leg of our sequence we were given a clearance to cross scole intersection at FL290. The first officer was flying and immediately started his descent. During the descent the first officer's side map display was lost. Since he was in the descent I started to troubleshoot the problem. I should have paid closer attention to his descent rate and would have caught the impending altitude deviation before it occurred. I was going through the checklist when ATC informed us that we had missed the crossing restr and asked if we could expedite our descent. Later, after switching the display's to both on, and back to normal, the map display returned for the remainder of the flight. I should not have let a small problem, like losing the first officer's map display, distract me from the more important duties of flying the aircraft. Supplemental information from acn 472152: the FMC indicated 12 mi from top of descent when the clearance was issued, and I initiated a 1000 FPM descent to intercept the normal profile. There was no conflicting traffic as the TCASII information was still being displayed. With raw data and the captain's map available and being displayed, I became preoccupied with stuff that really didn't matter. I will admit that I was fatigued due to the 2 hour delay into sfo and further delays in reaching my hotel room the night before. Arriving at sfo for this flight, we discovered that we would face a 2 hour and 30 min delay for departure. This delay added to the fatigue I was experiencing.

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Original NASA ASRS Text

Title: A DSNDING B737-700 FLC FAILS TO MAKE THEIR XING RESTR WHEN DISTR WITH A MINOR EQUIP PROB PRIOR TO SCOLE INTXN, AZ.

Narrative: ON THE SFO-PHX LEG OF OUR SEQUENCE WE WERE GIVEN A CLRNC TO CROSS SCOLE INTXN AT FL290. THE FO WAS FLYING AND IMMEDIATELY STARTED HIS DSCNT. DURING THE DSCNT THE FO'S SIDE MAP DISPLAY WAS LOST. SINCE HE WAS IN THE DSCNT I STARTED TO TROUBLESHOOT THE PROB. I SHOULD HAVE PAID CLOSER ATTN TO HIS DSCNT RATE AND WOULD HAVE CAUGHT THE IMPENDING ALTDEV BEFORE IT OCCURRED. I WAS GOING THROUGH THE CHKLIST WHEN ATC INFORMED US THAT WE HAD MISSED THE XING RESTR AND ASKED IF WE COULD EXPEDITE OUR DSCNT. LATER, AFTER SWITCHING THE DISPLAY'S TO BOTH ON, AND BACK TO NORMAL, THE MAP DISPLAY RETURNED FOR THE REMAINDER OF THE FLT. I SHOULD NOT HAVE LET A SMALL PROB, LIKE LOSING THE FO'S MAP DISPLAY, DISTRACT ME FROM THE MORE IMPORTANT DUTIES OF FLYING THE ACFT. SUPPLEMENTAL INFO FROM ACN 472152: THE FMC INDICATED 12 MI FROM TOP OF DSCNT WHEN THE CLRNC WAS ISSUED, AND I INITIATED A 1000 FPM DSCNT TO INTERCEPT THE NORMAL PROFILE. THERE WAS NO CONFLICTING TFC AS THE TCASII INFO WAS STILL BEING DISPLAYED. WITH RAW DATA AND THE CAPT'S MAP AVAILABLE AND BEING DISPLAYED, I BECAME PREOCCUPIED WITH STUFF THAT REALLY DIDN'T MATTER. I WILL ADMIT THAT I WAS FATIGUED DUE TO THE 2 HR DELAY INTO SFO AND FURTHER DELAYS IN REACHING MY HOTEL ROOM THE NIGHT BEFORE. ARRIVING AT SFO FOR THIS FLT, WE DISCOVERED THAT WE WOULD FACE A 2 HR AND 30 MIN DELAY FOR DEP. THIS DELAY ADDED TO THE FATIGUE I WAS EXPERIENCING.

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.