The flight crew was given a clearance to cross papee at 16000 ft. The first officer was flying and started the descent at what looked like the proper time. The center questioned the flight crew as to whether or not they were going to make the restr. The flight crew said they would make the restr. The flight crew was 500 ft high at the restr. The FMC was giving bad vertical information.

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Attributes
ACN	332120
Time
Date	199603
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : hyp
State Reference	CA
Altitude	msl bound lower : 16000 msl bound upper : 16500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent other
Route In Use	enroute airway : zoa
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 15000 flight time type : 12000
ASRS Report	332120
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance non adherence : far
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa
Resolutory Action	none taken : insufficient time other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were given a clearance to cross papee at 16000 ft. The first officer was flying and started the descent at what looked like the proper time. During the descent, center asked if we had a clearance to cross papee at 16000 ft. I acknowledged yes, then looked and saw we would be high without a greater descent. We crossed papee at about 500 ft high. I looked and saw the computer was giving bad vertical information.

Original NASA ASRS Text

Title: THE FLC WAS GIVEN A CLRNC TO CROSS PAPEE AT 16000 FT. THE FO WAS FLYING AND STARTED THE DSCNT AT WHAT LOOKED LIKE THE PROPER TIME. THE CTR QUESTIONED THE FLC AS TO WHETHER OR NOT THEY WERE GOING TO MAKE THE RESTR. THE FLC SAID THEY WOULD MAKE THE RESTR. THE FLC WAS 500 FT HIGH AT THE RESTR. THE FMC WAS GIVING BAD VERT INFO.

Narrative: WE WERE GIVEN A CLRNC TO CROSS PAPEE AT 16000 FT. THE FO WAS FLYING AND STARTED THE DSCNT AT WHAT LOOKED LIKE THE PROPER TIME. DURING THE DSCNT, CTR ASKED IF WE HAD A CLRNC TO CROSS PAPEE AT 16000 FT. I ACKNOWLEDGED YES, THEN LOOKED AND SAW WE WOULD BE HIGH WITHOUT A GREATER DSCNT. WE CROSSED PAPEE AT ABOUT 500 FT HIGH. I LOOKED AND SAW THE COMPUTER WAS GIVING BAD VERT INFO.

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.