Altitude crossing restr not met during an altitude undershoot by an MD88 flight crew on a STAR into ...

Attributes
ACN	521310
Time
Date	200108
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zdc.artcc
State Reference	DC
Altitude	msl bound lower : 11000 msl bound upper : 12000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-88
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 6500 flight time type : 2500
ASRS Report	521310
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance non adherence : published procedure other anomaly other
Resolutory Action	flight crew : overrode automation
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

During cruise FMS 'timed out.' after recovery of FMS, operation appeared normal. ATC later advised a turn left of 10 degrees to rejoin the STAR. Should have realized something was wrong. ATC cleared us to cross xyz intersection at 11000 ft. Crosschecked position with vors and realized we were much closer to crossing restr than FMS indicated. Used all available system to make restr, but I am not sure we were within compliance of the clearance. Have since begun xchking FMS position with navaids and not be as complacent with accuracy of the 'magenta line.'

Original NASA ASRS Text

Title: ALT XING RESTR NOT MET DURING AN ALT UNDERSHOOT BY AN MD88 FLT CREW ON A STAR INTO EWR, NJ.

Narrative: DURING CRUISE FMS 'TIMED OUT.' AFTER RECOVERY OF FMS, OP APPEARED NORMAL. ATC LATER ADVISED A TURN L OF 10 DEGS TO REJOIN THE STAR. SHOULD HAVE REALIZED SOMETHING WAS WRONG. ATC CLRED US TO CROSS XYZ INTXN AT 11000 FT. XCHKED POS WITH VORS AND REALIZED WE WERE MUCH CLOSER TO XING RESTR THAN FMS INDICATED. USED ALL AVAILABLE SYS TO MAKE RESTR, BUT I AM NOT SURE WE WERE WITHIN COMPLIANCE OF THE CLRNC. HAVE SINCE BEGUN XCHKING FMS POS WITH NAVAIDS AND NOT BE AS COMPLACENT WITH ACCURACY OF THE 'MAGENTA LINE.'

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.

Altitude crossing restr not met during an altitude undershoot by an MD88 flight crew on a STAR into ewr, nj.