A319 captain reports failure of managed descent mode to meet programmed crossing restriction.

Attributes
ACN	798382
Time
Date	200808
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : clt.airport
State Reference	NC
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	798382
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : overrode automation flight crew : returned to assigned altitude
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

In descent on JOHNS1 arrival; I had been given a crossing restr with a descent to a lower altitude. The hard crossing restr was programmed with the lower altitude set. The aircraft failed to meet the crossing restr in managed descent and descended 280 ft before I could recover and climb back to the crossing restr altitude.

Original NASA ASRS Text

Title: A319 CAPTAIN REPORTS FAILURE OF MANAGED DESCENT MODE TO MEET PROGRAMMED CROSSING RESTRICTION.

Narrative: IN DSCNT ON JOHNS1 ARR; I HAD BEEN GIVEN A XING RESTR WITH A DSCNT TO A LOWER ALT. THE HARD XING RESTR WAS PROGRAMMED WITH THE LOWER ALT SET. THE ACFT FAILED TO MEET THE XING RESTR IN MANAGED DSCNT AND DSNDED 280 FT BEFORE I COULD RECOVER AND CLB BACK TO THE XING RESTR ALT.

Data retrieved from NASA's ASRS site as of May 2009 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.