On descent, distraction A321 crew undershot crossing restr.

Attributes
ACN	502880
Time
Date	200103
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : clt.airport
State Reference	NC
Altitude	msl bound lower : 12000 msl bound upper : 12800
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : clt.tracon
Operator	common carrier : air carrier
Make Model Name	A321
Operating Under FAR Part	Part 121
Navigation In Use	other Other
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : unarm
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 60 flight time total : 8900 flight time type : 20
ASRS Report	502880
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

There was no conflict. We were in a descent, autoplt on and the mcdu was programmed to cross adena at 12000 ft. The captain was talking to a flight attendant, and I looked away to verify the approach plate to the mcdu. When I looked back to my pfd we were crossing adena at approximately 12800 ft. I should not have been verifying the approach information during the last 1000 ft to a leveloff.

Original NASA ASRS Text

Title: ON DSCNT, DISTR A321 CREW UNDERSHOT XING RESTR.

Narrative: THERE WAS NO CONFLICT. WE WERE IN A DSCNT, AUTOPLT ON AND THE MCDU WAS PROGRAMMED TO CROSS ADENA AT 12000 FT. THE CAPT WAS TALKING TO A FLT ATTENDANT, AND I LOOKED AWAY TO VERIFY THE APCH PLATE TO THE MCDU. WHEN I LOOKED BACK TO MY PFD WE WERE XING ADENA AT APPROX 12800 FT. I SHOULD NOT HAVE BEEN VERIFYING THE APCH INFO DURING THE LAST 1000 FT TO A LEVELOFF.

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.