Narrative:

En route lax-psp at 17000 ft IMC, just advised of probable holding over trm VOR. We were given clearance to descend to 15000 ft. Captain was PF, and failed to command autoplt to descend until after ATC queried us about 2 mins later. There was no conflict with other aircraft that we know of. Contributing factors included an irate passenger in coach that caused the flight attendants to continue calling the cockpit. This was our 4TH leg of the day (out of 6 total) and we had been solid IMC all day with many unusual clrncs/rertes due to lax landing east instead of west, my lack of experience in a glass cockpit, work overload for a 2-MAN crew! The obvious solution to this problem (other than returning to a 3-MAN cockpit crew set-up) is to always remember to aviate first -- everything else is secondary.

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Original NASA ASRS Text

Title: B737-500 CREW HAD ALTDEV IN ZLA CLASS E AIRSPACE.

Narrative: ENRTE LAX-PSP AT 17000 FT IMC, JUST ADVISED OF PROBABLE HOLDING OVER TRM VOR. WE WERE GIVEN CLRNC TO DSND TO 15000 FT. CAPT WAS PF, AND FAILED TO COMMAND AUTOPLT TO DSND UNTIL AFTER ATC QUERIED US ABOUT 2 MINS LATER. THERE WAS NO CONFLICT WITH OTHER ACFT THAT WE KNOW OF. CONTRIBUTING FACTORS INCLUDED AN IRATE PAX IN COACH THAT CAUSED THE FLT ATTENDANTS TO CONTINUE CALLING THE COCKPIT. THIS WAS OUR 4TH LEG OF THE DAY (OUT OF 6 TOTAL) AND WE HAD BEEN SOLID IMC ALL DAY WITH MANY UNUSUAL CLRNCS/RERTES DUE TO LAX LNDG E INSTEAD OF W, MY LACK OF EXPERIENCE IN A GLASS COCKPIT, WORK OVERLOAD FOR A 2-MAN CREW! THE OBVIOUS SOLUTION TO THIS PROB (OTHER THAN RETURNING TO A 3-MAN COCKPIT CREW SET-UP) IS TO ALWAYS REMEMBER TO AVIATE FIRST -- EVERYTHING ELSE IS SECONDARY.

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.