An A320 flight crew descends 300 ft below crossing restr on arrival.

Attributes
ACN	577237
Time
Date	200303
Day	Thu
Local Time Of Day	1201 To 1800
Place
State Reference	NJ
Altitude	msl single value : 10700
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	arrival star : korry ii
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 80 flight time total : 17200 flight time type : 140
ASRS Report	577237
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

First officer performing managed descent inbound on korry arrival to lga with 10000 ft set on FCU. We were cleared to descend via the korry arrival. The crossing restr at brand was at or above 11000 ft MSL. At 12000 ft, the controller issued maintain speed '300 KTS or greater.' we had been using managed speed and descent. The first officer then went to speed select 300 KTS and open descent. We went 300 ft below 11000 ft prior to brand. Since 10000 ft was set in FCU for arrival, we crossed brand at 10700 ft MSL due to being in open descent mode. We leveled out properly at 10000 ft at the next intersection.

Original NASA ASRS Text

Title: AN A320 FLT CREW DSNDS 300 FT BELOW XING RESTR ON ARR.

Narrative: FO PERFORMING MANAGED DSCNT INBOUND ON KORRY ARR TO LGA WITH 10000 FT SET ON FCU. WE WERE CLRED TO DSND VIA THE KORRY ARR. THE XING RESTR AT BRAND WAS AT OR ABOVE 11000 FT MSL. AT 12000 FT, THE CTLR ISSUED MAINTAIN SPD '300 KTS OR GREATER.' WE HAD BEEN USING MANAGED SPD AND DSCNT. THE FO THEN WENT TO SPD SELECT 300 KTS AND OPEN DSCNT. WE WENT 300 FT BELOW 11000 FT PRIOR TO BRAND. SINCE 10000 FT WAS SET IN FCU FOR ARR, WE CROSSED BRAND AT 10700 FT MSL DUE TO BEING IN OPEN DSCNT MODE. WE LEVELED OUT PROPERLY AT 10000 FT AT THE NEXT INTXN.

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.