Narrative:

Cleared out of FL260 'cross scy at FL220, gladd at 11000'.' captain flying, I set altitude selector/alerter on 11000'. FMC set for restriction scy at 220, gladd and 250 KT, 11000'. Captain took MCP out of VNAV into level change. Descending out of 21700' approximately 10-15 DME before scy, center stated 'cross scy at FL220.' I alerted captain to altitude bust, descent stopped at 21500', he climbed back to FL220, maintained until scy VOR. Remainder of flight uneventful. Don't know if center saw us going through FL220 or just a friendly reminder. FMC is smart, breeds complacency -- probably takes as much attention monitoring FMC as does if you just fly it yourself. Would not have occurred if 1) either of us had watched more closely, 2) VNAV left engaged 3) altitude selector/MCP set at FL220 instead of 11000'. Contributing factor, short leg, amount of work same as longer leg, time compressed, less time to monitor pilot flying. Supplemental information from acn 87367. I failed to select the mode control panel altitude window back to FL220 instead of 11000'.

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Original NASA ASRS Text

Title: PROGRAMMING THE FMC FAILED TO MAKE CROSSING RESTRICTION.

Narrative: CLRED OUT OF FL260 'CROSS SCY AT FL220, GLADD AT 11000'.' CAPT FLYING, I SET ALT SELECTOR/ALERTER ON 11000'. FMC SET FOR RESTRICTION SCY AT 220, GLADD AND 250 KT, 11000'. CAPT TOOK MCP OUT OF VNAV INTO LEVEL CHANGE. DSNDING OUT OF 21700' APPROX 10-15 DME BEFORE SCY, CENTER STATED 'CROSS SCY AT FL220.' I ALERTED CAPT TO ALT BUST, DSCNT STOPPED AT 21500', HE CLBED BACK TO FL220, MAINTAINED UNTIL SCY VOR. REMAINDER OF FLT UNEVENTFUL. DON'T KNOW IF CENTER SAW US GOING THROUGH FL220 OR JUST A FRIENDLY REMINDER. FMC IS SMART, BREEDS COMPLACENCY -- PROBABLY TAKES AS MUCH ATTN MONITORING FMC AS DOES IF YOU JUST FLY IT YOURSELF. WOULD NOT HAVE OCCURRED IF 1) EITHER OF US HAD WATCHED MORE CLOSELY, 2) VNAV LEFT ENGAGED 3) ALT SELECTOR/MCP SET AT FL220 INSTEAD OF 11000'. CONTRIBUTING FACTOR, SHORT LEG, AMOUNT OF WORK SAME AS LONGER LEG, TIME COMPRESSED, LESS TIME TO MONITOR PLT FLYING. SUPPLEMENTAL INFO FROM ACN 87367. I FAILED TO SELECT THE MODE CONTROL PANEL ALT WINDOW BACK TO FL220 INSTEAD OF 11000'.

Data retrieved from NASA's ASRS site as of August 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.